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1

Roulin, Alexandre, and Anne-Lyse Ducrest. "Genetics of colouration in birds." Seminars in Cell & Developmental Biology 24, no. 6-7 (2013): 594–608. http://dx.doi.org/10.1016/j.semcdb.2013.05.005.

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2

Crow, James F., and William F. Dove. "Birds' Eye View: A Decade of Perspectives." Genetics 148, no. 4 (1998): 1405–7. http://dx.doi.org/10.1093/genetics/148.4.1405.

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3

Dowding, John E., and Michael J. Taylor. "Genetics of polymorphism in the little shag." Notornis 34, no. 1 (1987): 51. https://doi.org/10.63172/881873etjalq.

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A genetic model is presented to explain plumage polymorphism in the Little Shag (Phalacrocorax melanoleucos brevirostris). Parent-offspring data from an Auckland colony show that expression of the three morphs (white-throated, smudgy and pied) is primarily controlled by two alleles at a single genetic locus. The allele specifying ‘dark’ (D) shows incomplete dominance over that specifying ‘pied’ (6). Comparison of morph frequencies with calculated genotype frequencies reveals that about 40% of white-throated birds are homozygous dominant (DD), the rest of the white-throated birds and all smudgy
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4

Leclaire, Sarah, Thomas Merkling, Christine Raynaud, et al. "Semiochemical compounds of preen secretion reflect genetic make-up in a seabird species." Proceedings of the Royal Society B: Biological Sciences 279, no. 1731 (2011): 1185–93. http://dx.doi.org/10.1098/rspb.2011.1611.

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Several vertebrates choose their mate according to genetic heterozygosity and relatedness, and use odour cues to assess their conspecifics' genetic make-up. In birds, although several species (including the black-legged kittiwake) exhibit non-random mating according to genetic traits, the cues used to assess genetic characteristics remain unknown. The importance of olfaction in birds' social behaviour is gaining attention among researchers, and it has been suggested that, as in other vertebrates, bird body scent may convey information about genetic traits. Here, we combined gas chromatography
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5

Norman, Janette, and Les Christidis. "Genetics and the conservation of Australian birds." Pacific Conservation Biology 3, no. 3 (1997): 306. http://dx.doi.org/10.1071/pc970306.

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Molecular genetic techniques can be used to address a wide array of contemporary conservation problems encountered in the management of captive and wild bird populations. Most applications pertain to issues relevant to the management of populations or species. These range from sex identification in breeding programmes involving species in which the sexes are phenotypically monomorphic, to the identification of taxonomic diversity at the level of species, subspecies and populations. Additionally, comparative analyses of intra-population variation provide a means of identifying populations more
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Rutkowski, Robert, Marek Keller, and Patrycja Jagołkowska. "Population genetics of the hazel hen Bonasa bonasia in Poland assessed with non-invasive samples." Open Life Sciences 7, no. 4 (2012): 759–75. http://dx.doi.org/10.2478/s11535-012-0051-2.

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AbstractDespite a severe decrease in the number of hazel hens during the 20th century, nowadays this grouse species is rather common in the forests of Northeastern and Southern Poland. We used mitochondrial control region and microsatellite markers to examine the genetic variability of Polish populations of hazel hens. We used non-invasively collected faeces to estimate genetic variability within populations, genetic differentiation among populations as well as genetic differentiation between two regions inhabited by two different subspecies of hazel hens. Our results confirm the usefulness of
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7

Price-Waldman, Rosalyn, and Mary Caswell Stoddard. "Avian Coloration Genetics: Recent Advances and Emerging Questions." Journal of Heredity 112, no. 5 (2021): 395–416. http://dx.doi.org/10.1093/jhered/esab015.

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Abstract The colorful phenotypes of birds have long provided rich source material for evolutionary biologists. Avian plumage, beaks, skin, and eggs—which exhibit a stunning range of cryptic and conspicuous forms—inspired early work on adaptive coloration. More recently, avian color has fueled discoveries on the physiological, developmental, and—increasingly—genetic mechanisms responsible for phenotypic variation. The relative ease with which avian color traits can be quantified has made birds an attractive system for uncovering links between phenotype and genotype. Accordingly, the field of av
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8

Olah, George, Brian Tilston Smith, Leo Joseph, Samuel C. Banks, and Robert Heinsohn. "Advancing Genetic Methods in the Study of Parrot Biology and Conservation." Diversity 13, no. 11 (2021): 521. http://dx.doi.org/10.3390/d13110521.

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Parrots (Psittaciformes) are a well-studied, diverse group of birds distributed mainly in tropical and subtropical regions. Today, one-third of their species face extinction, mainly due to anthropogenic threats. Emerging tools in genetics have made major contributions to understanding basic and applied aspects of parrot biology in the wild and in captivity. In this review, we show how genetic methods have transformed the study of parrots by summarising important milestones in the advances of genetics and their implementations in research on parrots. We describe how genetics helped to further k
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9

Ottinger, Mary Ann. "Birds." Experimental Gerontology 26, no. 5 (1991): 426–32. http://dx.doi.org/10.1016/0531-5565(91)90031-g.

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10

Birchler, J. A. "Dosage compensation for the birds." Heredity 102, no. 5 (2009): 423–24. http://dx.doi.org/10.1038/hdy.2008.134.

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11

BORS, Milena Sylwia, and Joanna GRUSZCZYŃSKA. "TRENDS IN GENETIC MARKERS IN CROCODILIAN CONSERVATION GENETICS." Folia Pomeranae Universitatis Technologiae Stetinensis Agricultura, Alimentaria, Piscaria et Zootechnica 375, no. 74 (2025): 1–21. https://doi.org/10.21005/aapz2025.74.2.1.

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Crocodilians, alongside birds, represent the last extant lineage of archosaurs, yet they face significant conservation challenges. Approximately half of the 27 recognized crocodilian species are at least vulnerable to extinction, with past and present overhunting, habitat degradation, and climate change being key threats. We assess the application of genetic markers in crocodilian conservation studies, focusing on their role in addressing population dynamics and population management. A comprehensive review of 149 studies reveals that microsatellites and mitochondrial DNA sequences are the mos
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12

Ellegren, Hans, and Ariane Carmichael. "Multiple and Independent Cessation of Recombination Between Avian Sex Chromosomes." Genetics 158, no. 1 (2001): 325–31. http://dx.doi.org/10.1093/genetics/158.1.325.

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Abstract Birds are characterized by female heterogamety; females carry the Z and W sex chromosomes, while males have two copies of the Z chromosome. We suggest here that full differentiation of the Z and W sex chromosomes of birds did not take place until after the split of major contemporary lineages, in the late Cretaceous. The ATP synthase α-subunit gene is now present in one copy each on the nonrecombining part of the W chromosome (ATP5A1W) and on the Z chromosome (ATP5A1Z). This gene seems to have evolved on several independent occasions, in different lineages, from a state of free recomb
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13

Walsh, Patrick T., Mike Hansell, Wendy D. Borello, and Susan D. Healy. "Repeatability of nest morphology in African weaver birds." Biology Letters 6, no. 2 (2009): 149–51. http://dx.doi.org/10.1098/rsbl.2009.0664.

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It is generally assumed that birds build nests according to a genetic ‘template’, little influenced by learning or memory. One way to confirm the role of genetics in nest building is to assess the repeatability of nest morphology with repeated nest attempts. Solitary weaver birds, which build multiple nests in a single breeding season, are a useful group with which to do this. Here we show that repeatability of nest morphology was low, but significant, in male Southern Masked weaver birds and not significant in the Village weavers. The larger bodied Village weavers built larger nests than did
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14

Puchała, Karol O., Zuzanna Nowak-Życzyńska, Sławomir Sielicki, and Wanda Olech. "Assessment of the Genetic Potential of the Peregrine Falcon (Falco peregrinus peregrinus) Population Used in the Reintroduction Program in Poland." Genes 12, no. 5 (2021): 666. http://dx.doi.org/10.3390/genes12050666.

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Microsatellite DNA analysis is a powerful tool for assessing population genetics. The main aim of this study was to assess the genetic potential of the peregrine falcon population covered by the restitution program. We characterized individuals from breeders that set their birds for release into the wild and birds that have been reintroduced in previous years. This was done using a well-known microsatellite panel designed for the peregrine falcon containing 10 markers. We calculated the genetic distance between individuals and populations using the UPGMA (unweighted pair group method with arit
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15

Beecher, Michael D. "Kin recognition in birds." Behavior Genetics 18, no. 4 (1988): 465–82. http://dx.doi.org/10.1007/bf01065515.

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16

Gousy-Leblanc, Marianne, Glenn Yannic, Jean-François Therrien, and Nicolas Lecomte. "Mapping our knowledge on birds of prey population genetics." Conservation Genetics 22, no. 5 (2021): 685–702. http://dx.doi.org/10.1007/s10592-021-01368-9.

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17

Mets, David G., and Michael S. Brainard. "Genetic variation interacts with experience to determine interindividual differences in learned song." Proceedings of the National Academy of Sciences 115, no. 2 (2017): 421–26. http://dx.doi.org/10.1073/pnas.1713031115.

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Learning reflects the influence of experience on genetically determined circuitry, but little is known about how experience and genetics interact to determine complex learned phenotypes. Here, we used vocal learning in songbirds to study how experience and genetics contribute to interindividual differences in learned song. Previous work has established that such differences in song within a species depend on learning, but in principle some of these differences could also depend on genetic variation. We focused on song tempo, a learned and quantifiable feature that is controlled by central neur
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18

Yazdi, Homa Papoli, Willian T. A. F. Silva, and Alexander Suh. "Why Do Some Sex Chromosomes Degenerate More Slowly Than Others? The Odd Case of Ratite Sex Chromosomes." Genes 11, no. 10 (2020): 1153. http://dx.doi.org/10.3390/genes11101153.

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The hallmark of sex chromosome evolution is the progressive suppression of recombination which leads to subsequent degeneration of the non-recombining chromosome. In birds, species belonging to the two major clades, Palaeognathae (including tinamous and flightless ratites) and Neognathae (all remaining birds), show distinctive patterns of sex chromosome degeneration. Birds are female heterogametic, in which females have a Z and a W chromosome. In Neognathae, the highly-degenerated W chromosome seems to have followed the expected trajectory of sex chromosome evolution. In contrast, among Palaeo
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19

Barta, Zoltán, John M. McNamara, Alasdair I. Houston, Thomas P. Weber, Anders Hedenström, and Orsolya Feró. "Optimal moult strategies in migratory birds." Philosophical Transactions of the Royal Society B: Biological Sciences 363, no. 1490 (2007): 211–29. http://dx.doi.org/10.1098/rstb.2007.2136.

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Avian migration, which involves billions of birds flying vast distances, is known to influence all aspects of avian life. Here we investigate how birds fit moult into an annual cycle determined by the need to migrate. Large variation exists in moulting patterns in relation to migration: for instance, moult can occur after breeding in the summer or after arrival in the wintering quarters. Here we use an optimal annual routine model to investigate why this variation exists. The modelled bird's decisions depend on the time of year, its energy reserves, breeding status, experience, flight feather
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20

Black, Jeffrey M. "Reintroduction and restocking: guidelines for bird recovery programmes." Bird Conservation International 1, no. 4 (1991): 329–34. http://dx.doi.org/10.1017/s095927090000068x.

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SummaryReintroduction and restocking programmes are conservation tools which may be employed when a wild population is otherwise beyond recovery. The decision to undertake such programmes should be based on a series of “feasibility” assessments (e.g. the bird's ecology, current threats, suitability of available stock and regional human socioeconomic implications). Releases should only take place when the habitat is capable of sustaining a viable population and the original constraining factors no longer operate. Releasing birds into near-saturated areas may be harmful and should be avoided. Lo
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21

Williams, Nigel. "Early birds." Current Biology 14, no. 15 (2004): R595—R596. http://dx.doi.org/10.1016/j.cub.2004.07.032.

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22

Schmitt, C. Jonathan, and Scott V. Edwards. "Passerine birds." Current Biology 32, no. 20 (2022): R1149—R1154. http://dx.doi.org/10.1016/j.cub.2022.08.061.

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23

Maderspacher, Florian. "Flightless birds." Current Biology 32, no. 20 (2022): R1155—R1162. http://dx.doi.org/10.1016/j.cub.2022.09.039.

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24

Williams, Nigel. "Knocking birds." Current Biology 19, no. 11 (2009): R433. http://dx.doi.org/10.1016/j.cub.2009.05.041.

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25

Kim, Young-Min, Seung-Je Woo, and Jae-Yong Han. "Strategies for the Generation of Gene Modified Avian Models: Advancement in Avian Germline Transmission, Genome Editing, and Applications." Genes 14, no. 4 (2023): 899. http://dx.doi.org/10.3390/genes14040899.

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Avian models are valuable for studies of development and reproduction and have important implications for food production. Rapid advances in genome-editing technologies have enabled the establishment of avian species as unique agricultural, industrial, disease-resistant, and pharmaceutical models. The direct introduction of genome-editing tools, such as the clustered regularly interspaced short palindromic repeats (CRISPR) system, into early embryos has been achieved in various animal taxa. However, in birds, the introduction of the CRISPR system into primordial germ cells (PGCs), a germline-c
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26

Davis, Anthony, and Matthew J. Greenwold. "Evolution of an Epidermal Differentiation Complex (EDC) Gene Family in Birds." Genes 12, no. 5 (2021): 767. http://dx.doi.org/10.3390/genes12050767.

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The transition of amniotes to a fully terrestrial lifestyle involved the adaptation of major molecular innovations to the epidermis, often in the form of epidermal appendages such as hair, scales and feathers. Feathers are diverse epidermal structures of birds, and their evolution has played a key role in the expansion of avian species to a wide range of lifestyles and habitats. As with other epidermal appendages, feather development is a complex process which involves many different genetic and protein elements. In mammals, many of the genetic elements involved in epidermal development are lo
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27

Wang, Ying, Perot Saelao, Colin Kern, et al. "Liver Transcriptome Responses to Heat Stress and Newcastle Disease Virus Infection in Genetically Distinct Chicken Inbred Lines." Genes 11, no. 9 (2020): 1067. http://dx.doi.org/10.3390/genes11091067.

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Heat stress results in reduced productivity, anorexia, and mortality in chickens. The objective of the study was to identify genes and signal pathways associated with heat stress and Newcastle disease virus (NDV) infection in the liver of chickens through RNA-seq analysis, using two highly inbred chicken lines (Leghorn and Fayoumi). All birds were held in the same environment until 14 days of age. On day 14, half the birds were exposed to 38 °C with 50% relative humidity for 4 h, then 35 °C until the end of the experiment. The remaining birds were kept at 25 °C throughout the experiment. The h
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28

Aslam, Humaira, Manel Mansour, Shehla Honey, et al. "Facts of the main rigorous heavy metals affecting Waterfowls health, genetics, and migration habits." Journal of Toxicological Studies 3, no. 1 (2024): 1990. https://doi.org/10.59400/jts1990.

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Swans, geese, and ducklings falling under the Anatedae group are important waterfowls to water systems. In this study, migratory birds that cover long distances are affected by some environmental stressors, especially heavy metal contamination. Al, Pb, Hg, Cd, Ni, and other similar metals are received by water structures and are natural in water, but these metals in high concentrations negatively affect the quality of water. Birds drink the polluted water and feed on polluted food, which results in the bioaccumulation of these metals in their body tissues. It leads to several diseases in body
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29

Pigozzi, María I. "The Chromosomes of Birds during Meiosis." Cytogenetic and Genome Research 150, no. 2 (2016): 128–38. http://dx.doi.org/10.1159/000453541.

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The cytological analysis of meiotic chromosomes is an exceptional tool to approach complex processes such as synapsis and recombination during the division. Chromosome studies of meiosis have been especially valuable in birds, where naturally occurring mutants or experimental knock-out animals are not available to fully investigate the basic mechanisms of major meiotic events. This review highlights the main contributions of synaptonemal complex and lampbrush chromosome research to the current knowledge of avian meiosis, with special emphasis on the organization of chromosomes during prophase
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Tieleman, B. Irene, Maaike A. Versteegh, Anthony Fries, et al. "Genetic modulation of energy metabolism in birds through mitochondrial function." Proceedings of the Royal Society B: Biological Sciences 276, no. 1662 (2009): 1685–93. http://dx.doi.org/10.1098/rspb.2008.1946.

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Despite their central importance for the evolution of physiological variation, the genetic mechanisms that determine energy expenditure in animals have largely remained unstudied. We used quantitative genetics to confirm that both mass-specific and whole-organism basal metabolic rate (BMR) were heritable in a captive-bred population of stonechats ( Saxicola torquata spp.) founded on birds from three wild populations (Europe, Africa and Asia) that differed in BMR. This argues that BMR is at least partially under genetic control by multiple unknown nuclear loci each with a limited effect on the
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31

Lake, Juniper A., Michael B. Papah, and Behnam Abasht. "Increased Expression of Lipid Metabolism Genes in Early Stages of Wooden Breast Links Myopathy of Broilers to Metabolic Syndrome in Humans." Genes 10, no. 10 (2019): 746. http://dx.doi.org/10.3390/genes10100746.

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Wooden breast is a muscle disorder affecting modern commercial broiler chickens that causes a palpably firm pectoralis major muscle and severe reduction in meat quality. Most studies have focused on advanced stages of wooden breast apparent at market age, resulting in limited insights into the etiology and early pathogenesis of the myopathy. Therefore, the objective of this study was to identify early molecular signals in the wooden breast transcriptional cascade by performing gene expression analysis on the pectoralis major muscle of two-week-old birds that may later exhibit the wooden breast
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32

Jiang, Lan, De Bi, Hengwu Ding, et al. "Systematic Identification and Evolution Analysis of Sox Genes in Coturnix japonica Based on Comparative Genomics." Genes 10, no. 4 (2019): 314. http://dx.doi.org/10.3390/genes10040314.

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Coturnix japonica (Japanese quail) has been extensively used as a model animal for biological studies. The Sox gene family, which was systematically characterized by a high-mobility group (HMG-box) in many animal species, encodes transcription factors that play central roles during multiple developmental processes. However, genome-wide investigations on the Sox gene family in birds are scarce. In the current study, we first performed a genome-wide study to explore the Sox gene family in galliform birds. Based on available genomic sequences retrieved from the NCBI database, we focused on the gl
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33

Colihueque, Nelson, and Alberto Gantz. "Molecular genetic studies of Chilean avifauna: an overview about current progress." Neotropical Biology and Conservation 14, no. 4 (2019): 459–77. http://dx.doi.org/10.3897/neotropical.14.e48588.

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The biodiversity of Chilean avifauna has been shaped by geological events, geographical factors and extreme climatic regimens. Molecular genetic studies developed to date have begun to provide valuable information to elucidate the effect of these factors on the evolutionary history of Chilean birds. We conducted a search in two bibliographic databases (PubMed and Scopus) over the period between 1998 and 2018 to identify the number and class of articles published in this research field. The quantification of specific research categories was also performed to assess progress in different molecul
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34

HAMMAR, BO. "THE KARYOTYPES OF NINE BIRDS." Hereditas 55, no. 2-3 (2009): 367–85. http://dx.doi.org/10.1111/j.1601-5223.1966.tb02056.x.

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35

Clayton, Nicola S., Joanna M. Dally, and Nathan J. Emery. "Social cognition by food-caching corvids. The western scrub-jay as a natural psychologist." Philosophical Transactions of the Royal Society B: Biological Sciences 362, no. 1480 (2007): 507–22. http://dx.doi.org/10.1098/rstb.2006.1992.

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Food-caching corvids hide food, but such caches are susceptible to pilfering by other individuals. Consequently, the birds use several counter strategies to protect their caches from theft, e.g. hiding most of them out of sight. When observed by potential pilferers at the time of caching, experienced jays that have been thieves themselves, take further protective action. Once the potential pilferers have left, they move caches those birds have seen, re-hiding them in new places. Naive birds that had no thieving experience do not do so. By focusing on the counter strategies of the cacher when p
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36

Sunnucks, Paul. "Towards modelling persistence of woodland birds: the role of genetics." Emu - Austral Ornithology 111, no. 1 (2011): 19–39. http://dx.doi.org/10.1071/mu10008.

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37

Kroczak, Aleksandra, Heliodor Wierzbicki, and Adam Dawid Urantówka. "The Length Polymorphism of the 9th Intron in the Avian CHD1 Gene Allows Sex Determination in Some Species of Palaeognathae." Genes 13, no. 3 (2022): 507. http://dx.doi.org/10.3390/genes13030507.

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In palaeognathous birds, several PCR-based methods and a range of genes and unknown genomic regions have been studied for the determination of sex. Many of these methods have proven to be unreliable, complex, expensive, and time-consuming. Even the most widely used PCR markers for sex typing in birds, the selected introns of the highly conserved CHD1 gene (primers P2/P8, 1237L/1272H, and 2550F/2718R), have rarely been effective in palaeognathous birds. In this study we used eight species of Palaeognathae to test three PCR markers: CHD1i9 (CHD1 gene intron 9) and NIPBLi16 (NIPBL gene intron 16)
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Joddha, Harshrajsinh B., Rafiyuddin A. Mathakiya, Kuldip V. Joshi, et al. "Profiling of Antimicrobial Resistance Genes and Integron from Escherichia coli Isolates Using Whole Genome Sequencing." Genes 14, no. 6 (2023): 1212. http://dx.doi.org/10.3390/genes14061212.

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This study is designed to investigate Escherichia coli for the antibiotic resistance genes (ARGs) and integrons from healthy as well as diarrhoeic/diseased animals/birds’ faecal samples. A total of eight samples were selected for the study; from each animal, two samples were taken, one from healthy animals/birds and one from diarrhoeic/diseased animals/birds. Antibiotic sensitivity testing (AST) and whole genome sequencing (WGS) was performed for selected isolates. The E. coli isolates showed resistance to moxifloxacin, followed by erythromycin, ciprofloxacin, pefloxacin, tetracycline, levoflo
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39

Umarani, R. "தொல்காப்பிய மரபியல் கோட்பாடுகள்". Shanlax International Journal of Tamil Research 5, № 1 (2020): 139–44. http://dx.doi.org/10.34293/tamil.v5i1.3407.

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The genetics at the end of the Tholgappiam explains the protocol that is followed in language and life. Tholkappiyam genetics refers to the way in which the young names, male names, female names of animals and birds were studied in the traditional way.That is to say, after explaining the youth, male and female of the creatures, one can see that the monogamous creatures have discriminated against the people in the middle. Because these are set to establish that interpolation.Furthermore, after the threads that are the backbone of genetics, there are distinctions in the text, strategy, and text
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40

Madden, JR, F. Santilli, and MA Whiteside. "The welfare of game birds destined for release into the wild: a balance between early life care and preparation for future natural hazards." Animal Welfare 29, no. 1 (2020): 1–18. http://dx.doi.org/10.7120/09627286.29.1.001.

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Globally, over 110 million game birds are reared annually and released for recreational hunting. Game birds differ from other reared livestock because they experience two very distinct environments during their lives. Chicks are first reared in captivity for 6–12 weeks under managed, stable conditions and then released into the wild. A limited set of 13 studies have explored how the rearing conditions experienced by chicks influences their pre-release welfare, typically in terms of physical injury (feather-pecking) or behavioural assays of stress responses. However, no studies have considered
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41

van der Zwan, Henriëtte, and Rencia van der Sluis. "Polly Wants a Genome: The Lack of Genetic Testing for Pet Parrot Species." Genes 12, no. 7 (2021): 1097. http://dx.doi.org/10.3390/genes12071097.

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Parrots are considered the third most popular pet species, after dogs and cats, in the United States of America. Popular birds include budgerigars, lovebirds and cockatiels and are known for their plumage and vocal learning abilities. Plumage colour variation remains the main driving force behind breeder selection. Despite the birds’ popularity, only two molecular genetic tests—bird sexing and pathogen screening—are commercially available to breeders. For a limited number of species, parentage verification tests are available, but are mainly used in conservation and not for breeding purposes.
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Smith. "Genomics of Avian Viral Infections." Genes 10, no. 10 (2019): 814. http://dx.doi.org/10.3390/genes10100814.

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The poultry industry currently accounts for the production of around 118 million metric tons of meat and around 74 million metric tons of eggs annually. As the global population continues to increase, so does our reliance on poultry as a food source. It is therefore of vital importance that we safeguard this valuable resource and make the industry as economically competitive as possible. Avian viral infections, however, continue to cost the poultry industry billions of dollars annually. This can be in terms of vaccination costs, loss of birds and decreased production. With a view to improving
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43

Aplin, Lucy. "Culture in birds." Current Biology 32, no. 20 (2022): R1136—R1140. http://dx.doi.org/10.1016/j.cub.2022.08.070.

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44

Makovicky, Peter J., and Sushma Reddy. "Evolution: Brainier Birds." Current Biology 30, no. 13 (2020): R778—R780. http://dx.doi.org/10.1016/j.cub.2020.05.025.

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Degrandi, Tiago M., Analía del Valle Garnero, Patricia C. M. O'Brien, et al. "Chromosome Painting in Trogon s. surrucura (Aves, Trogoniformes) Reveals a Karyotype Derived by Chromosomal Fissions, Fusions, and Inversions." Cytogenetic and Genome Research 151, no. 4 (2017): 208–15. http://dx.doi.org/10.1159/000471782.

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Trogons are forest birds with a wide distribution, being found in Africa, Asia, and America, and are included in the order Trogoniformes, family Trogonidae. Phylogenetic studies using molecular data have not been able to determine the phylogenetic relationship among the different genera of trogons. So far, no cytogenetic data for these birds exist. Hence, the aim of this study was to characterize the karyotype of Trogon surrucura surrucura by means of classical and molecular cytogenetics. We found a diploid chromosome number of 2n = 82, similar to most birds, with several derived features comp
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HAMMAR, BO. "The karyotypes of thirty-one birds." Hereditas 65, no. 1 (2009): 29–58. http://dx.doi.org/10.1111/j.1601-5223.1970.tb02306.x.

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Gentle, M. J. "Pain in Birds." Animal Welfare 1, no. 4 (1992): 235–47. http://dx.doi.org/10.1017/s0962728600015189.

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AbstractFor the detection and assessment of pain in animals both behavioural and physiological measurements are necessary. Cutaneous receptors which responded to noxious stimulation (nociceptors) have been identified in birds and have been characterized physiologically in the chicken. Following cutaneous nociceptive stimulation the chicken showed cardiovascular and characteristic behavioural changes consistent with those seen in mammals and indicative of pain perception. Following major burn trauma (partial beak amputation) there was behavioural and electrophysiological evidence fora pain-free
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Ellegren, Hans, and Anna-Karin Fridolfsson. "Male–driven evolution of DNA sequences in birds." Nature Genetics 17, no. 2 (1997): 182–84. http://dx.doi.org/10.1038/ng1097-182.

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Kim, Hye-Ryoung, Choi-Kyu Park, Youn-Jeong Lee, et al. "Low pathogenic H7 subtype avian influenza viruses isolated from domestic ducks in South Korea and the close association with isolates of wild birds." Journal of General Virology 93, no. 6 (2012): 1278–87. http://dx.doi.org/10.1099/vir.0.041269-0.

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We characterized low pathogenic avian influenza (LPAI) viruses of the H7 subtype that were isolated from domestic ducks and wild birds in South Korea from 2008 to 2011. A total of 20 H7 viruses were collected from live-bird markets (LBMs), duck farms and wild-bird habitats using avian influenza (AI) surveillance and epidemiological approaches. A phylogenetic analysis of the H7 viruses that were isolated from domestic ducks and wild birds demonstrated that they were separated into 12 genotypes (A–D and Wb-1–8, respectively), indicating genetic diversity. These H7 viruses were related to the rec
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Magor, Katharine E. "Evolution of RNA sensing receptors in birds." Immunogenetics 74, no. 1 (2022): 149–65. http://dx.doi.org/10.1007/s00251-021-01238-1.

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