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Journal articles on the topic 'Zygodactyly'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Sustaita, Diego, Yuri Gloumakov, Leah R. Tsang, and Aaron M. Dollar. "Behavioral correlates of semi-zygodactyly in Ospreys (Pandion haliaetus) based on analysis of internet images." PeerJ 7 (February 5, 2019): e6243. http://dx.doi.org/10.7717/peerj.6243.

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Ospreys are renowned for their fishing abilities, which have largely been attributed to their specialized talon morphology and semi-zygodactyly−the ability to rotate the fourth toe to accompany the first toe in opposition of toes II and III. Anecdotal observations indicate that zygodactyly in Ospreys is associated with prey capture, although to our knowledge this has not been rigorously tested. As a first pass toward understanding the functional significance of semi-zygodactyly in Ospreys, we scoured the internet for images of Osprey feet in a variety of circumstances. From these we cross-tabu

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2

Niblock, Aaron, Dominic Og McConville, and Patrick John Morrison. "Zygodactyly is strongly associated with Acute Myeloid Leukaemia." British Journal of Haematology 177, no. 4 (2016): 659–60. http://dx.doi.org/10.1111/bjh.14096.

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3

McConville, Dominic O., G. Pooler Archbold, Anthony Lewis, and Patrick J. Morrison. "Zygodactyly (Syndactyly Type A1) Associated With Midfoot Charcot Neuropathy and Diabetes." Diabetes Care 41, no. 5 (2018): e74-e75. http://dx.doi.org/10.2337/dc18-0011.

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4

Necas, Petr. "Nečas, P. (2020) Chameleodactyly: New term to describe the unique arrangement of digits in chameleons (Reptilia: Chamaeleonidae). – Archaius 1 (1): 4 – 5." Archaius 1, no. 1 (2020): 4–5. https://doi.org/10.5281/zenodo.3751185.

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5

Ksepka, Daniel T., Thomas A. Stidham, and Thomas E. Williamson. "Early Paleocene landbird supports rapid phylogenetic and morphological diversification of crown birds after the K–Pg mass extinction." Proceedings of the National Academy of Sciences 114, no. 30 (2017): 8047–52. http://dx.doi.org/10.1073/pnas.1700188114.

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Evidence is accumulating for a rapid diversification of birds following the K–Pg extinction. Recent molecular divergence dating studies suggest that birds radiated explosively during the first few million years of the Paleocene; however, fossils from this interval remain poorly represented, hindering our understanding of morphological and ecological specialization in early neoavian birds. Here we report a small fossil bird from the Nacimiento Formation of New Mexico, constrained to 62.221–62.517 Ma. This partial skeleton represents the oldest arboreal crown group bird known. Phylogenetic analy

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6

Mumtaz, Sara, Esra Yıldız, Karmoon Lal, Aslıhan Tolun, and Sajid Malik. "Complex postaxial polydactyly types A and B with camptodactyly, hypoplastic third toe, zygodactyly and other digit anomalies caused by a novel GLI3 mutation." European Journal of Medical Genetics 60, no. 5 (2017): 268–74. http://dx.doi.org/10.1016/j.ejmg.2017.03.004.

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7

Botelho, João Francisco, Daniel Smith-Paredes, Daniel Nuñez-Leon, Sergio Soto-Acuña, and Alexander O. Vargas. "The developmental origin of zygodactyl feet and its possible loss in the evolution of Passeriformes." Proceedings of the Royal Society B: Biological Sciences 281, no. 1788 (2014): 20140765. http://dx.doi.org/10.1098/rspb.2014.0765.

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The zygodactyl orientation of toes (digits II and III pointing forwards, digits I and IV pointing backwards) evolved independently in different extant bird taxa. To understand the origin of this trait in modern birds, we investigated the development of the zygodactyl foot of the budgerigar (Psittaciformes). We compared its muscular development with that of the anisodactyl quail (Galliformes) and show that while the musculus abductor digiti IV (ABDIV) becomes strongly developed at HH36 in both species, the musculus extensor brevis digiti IV (EBDIV) degenerates and almost disappears only in the

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8

Mayr, Gerald. "A new family of Eocene zygodactyl birds." Senckenbergiana lethaea 78, no. 1-2 (1998): 199–209. http://dx.doi.org/10.1007/bf03042769.

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9

Mayr, Gerald, and Nikita Zelenkov. "New specimens of zygodactylid birds from the middle Eocene of Messel, with description of a new species of Primozygodactylus." Acta Palaeontologica Polonica 54, no. 1 (2009): 15–20. https://doi.org/10.4202/app.2009.B103.

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Mayr, Gerald, Zelenkov, Nikita (2009): New specimens of zygodactylid birds from the middle Eocene of Messel, with description of a new species of Primozygodactylus. Acta Palaeontologica Polonica 54 (1): 15-20, DOI: 10.4202/app.2009.B103, URL: http://www.bioone.org/doi/abs/10.4202/app.2009.B103

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10

Senthil, Pavan, Om Vishanagra, John Sparkman, Peter Smith, and Albert Manero. "Design and Assessment of Bird-Inspired 3D-Printed Models to Evaluate Grasp Mechanics." Biomimetics 9, no. 4 (2024): 195. http://dx.doi.org/10.3390/biomimetics9040195.

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Adapting grasp-specialized biomechanical structures into current research with 3D-printed prostheses may improve robotic dexterity in grasping a wider variety of objects. Claw variations across various bird species lend biomechanical advantages for grasping motions related to perching, climbing, and hunting. Designs inspired by bird claws provide improvements beyond a human-inspired structure for specific grasping applications to offer a solution for mitigating a cause of the high rejection rate for upper-limb prostheses. This research focuses on the design and manufacturing of two robotic tes

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11

Lai, Anna Chiara, and Paola Loreti. "Self-similar control systems and applications to zygodactyl bird's foot." Networks and Heterogeneous Media 10, no. 2 (2015): 401–19. http://dx.doi.org/10.3934/nhm.2015.10.401.

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12

Lockley, Martin G., Rihui Li, Jerald D. Harris, Masaki Matsukawa, and Mingwei Liu. "Earliest zygodactyl bird feet: evidence from Early Cretaceous roadrunner-like tracks." Naturwissenschaften 94, no. 8 (2007): 657–65. http://dx.doi.org/10.1007/s00114-007-0239-x.

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13

Smith, N. Adam, Aj M. DeBee, and Julia A. Clarke. "Systematics and phylogeny of the Zygodactylidae (Aves, Neognathae) with description of a new species from the early Eocene of Wyoming, USA." PeerJ 6 (June 25, 2018): e4950. http://dx.doi.org/10.7717/peerj.4950.

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Zygodactylidae are an extinct lineage of perching birds characterized by distinct morphologies of the foot and wing elements. Although the clade has a complex taxonomic history, current hypotheses place Zygodactylidae as the sister taxon to Passeriformes (i.e., songbirds). Given the rather sparse fossil record of early passeriforms, the description of zygodactylid taxa is important for inferring potentially ancestral states in the largest radiation of living birds (i.e., the ∼6,000 species of extant passeriforms). Despite the exceptional preservation of many specimens and considerable species

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14

Carril, Julieta, Claudio G. Barbeito, and Claudia P. Tambussi. "Making a parrot zygodactyl foot: Osteology and morphogenesis of the tarsometatarsus in the monk parakeet (Myiopsitta monachus)." Zoology 144 (February 2021): 125877. http://dx.doi.org/10.1016/j.zool.2020.125877.

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15

Mayr, Gerald. "A reassessment of Eocene parrotlike fossils indicates a previously undetected radiation of zygodactyl stem group representatives of passerines (Passeriformes)." Zoologica Scripta 44, no. 6 (2015): 587–602. http://dx.doi.org/10.1111/zsc.12128.

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16

Mayr, Gerald. "A partial skeleton of a new species of Tynskya Mayr, 2000 (Aves, Messelasturidae) from the London Clay highlights the osteological distinctness of a poorly known early Eocene “owl/parrot mosaic”." PalZ 95, no. 2 (2021): 337–57. http://dx.doi.org/10.1007/s12542-020-00541-8.

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AbstractTynskya eocaena is an early Eocene bird with a raptor-like skull and semi-zygodactyl feet, whose description is based on a skeleton from the North American Green River Formation. In the present study, three-dimensionally preserved bones of a new species of Tynskya, T. waltonensis, are reported from the London Clay of Walton-on-the-Naze (Essex, UK). The fossils belong to a single individual and provide new insights into the skeletal morphology of messelasturids. In particular, they reveal unusual vertebral specializations, with the cervical vertebrae having concave rather than saddle-sh

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17

J, Violet Beaulah, P. Sridevi, K. S. Ravali, P. Dharani, S. Rajathi, and T. A. Kannan. "Hindlimb Skeletal Structure of the Green-winged Macaw: An Anatomical Study." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 10 (2024): 26–33. http://dx.doi.org/10.56557/upjoz/2024/v45i104042.

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In birds, the forelimb bones undergo modification to facilitate muscle attachment for flight, enabling the movement of wings up and down. Conversely, hindlimb bones primarily support walking and perching functions, necessitating evolutionary adaptations in their structure. Therefore, this study aims to document the gross anatomical features of hind limb bones in Green-winged Macaws, including the femur, tibio-tarsus, tarsometatarsus, and digits. The bones were sourced from six Green-winged Macaw carcasses undergoing post-mortem examination at the Department of Veterinary Pathology, Madras Vete

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18

Mayr, Gerald, and Nikita Zelenkov. "New Specimens of Zygodactylid Birds from the Middle Eocene of Messel, with Description of a New Species ofPrimozygodactylus." Acta Palaeontologica Polonica 54, no. 1 (2009): 15–20. http://dx.doi.org/10.4202/app.2009.b103.

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19

Mayr, Gerald. "A remarkably complete skeleton from the London Clay provides insights into the morphology and diversity of early Eocene zygodactyl near-passerine birds." Journal of Systematic Palaeontology 18, no. 22 (2020): 1891–906. http://dx.doi.org/10.1080/14772019.2020.1862930.

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20

Mayr, Gerald, S. Bruce Archibald, Gary W. Kaiser, and Rolf W. Mathewes. "Early Eocene (Ypresian) birds from the Okanagan Highlands, British Columbia (Canada) and Washington State (USA)." Canadian Journal of Earth Sciences 56, no. 8 (2019): 803–13. http://dx.doi.org/10.1139/cjes-2018-0267.

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We survey the known avian fossils from Ypresian (early Eocene) fossil sites of the North American Okanagan Highlands, mainly in British Columbia (Canada). All specimens represent taxa that were previously unknown from the Eocene of far-western North America. Wings from the McAbee site are tentatively referred to the Gaviiformes and would constitute the earliest fossil record of this group of birds. A postcranial skeleton from Driftwood Canyon is tentatively assigned to the Songziidae, a taxon originally established for fossils from the Ypresian of China. Two skeletons from Driftwood Canyon and

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21

Mayr, Gerald. "New species of Primozygodactylus from Messel and the ecomorphology and evolutionary significance of early Eocene zygodactylid birds (Aves, Zygodactylidae)." Historical Biology 29, no. 7 (2016): 875–84. http://dx.doi.org/10.1080/08912963.2016.1261135.

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22

Lynch, John D. "THE RELATIONSHIPS OF AN ENSEMBLE OF GUATEMALAN AND MEXICAN FROGS (ELEUTHERODACTYLUS: LEPTODACTYLIDAE: AMPHIBIA)." Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales 24, no. 90 (2024): 129–56. http://dx.doi.org/10.18257/raccefyn.24(90).2000.2843.

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Eleutherodactylus daryi and E. greggi are shown to be species of the Eleutherodactylus gollmeri group which is defined on the basis of having a synapomorphy (fusion of sacrum and presacral vertebrae). Eleutherodactylus omiltemanus is a species of the rhodopis Series rather than thefitzingeri Series. The Eleutherodactylus omiltemanus group disappears because ali of its contained members are placed in other species groups. Eleutherodactylus saltator is a synonym of E. mexicanus. Eleutherodactylus rhodopis sensu lato contains two species, a larger upland E. rhodopis and the more widely distibuted

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23

Hieronymus, Tobin L., David A. Waugh, and Julia A. Clarke. "A new zygodactylid species indicates the persistence of stem passerines into the early Oligocene in North America." BMC Evolutionary Biology 19, no. 1 (2019). http://dx.doi.org/10.1186/s12862-018-1319-6.

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24

Anderson, C. Jane, Eric A. Tillman, William P. Bukoski, et al. "A novel parakeet‐selective feeder for control of invasive psittacines." Wildlife Society Bulletin, September 3, 2023. http://dx.doi.org/10.1002/wsb.1483.

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AbstractOver 40 species of parrots, members of order Psittaciformes, have established nonnative populations globally. Monk parakeets (Myiopsitta monachus) are among the most invasive bird species worldwide. In their introduced range, populations of monk parakeets have caused negative impacts on native species, habitats, economies, and human safety. Lethal population management has been complicated by the intelligence of monk parakeets, as they quickly alter behavior to avoid risks. Further, lethal control programs have been halted due to public controversy, as parakeets are highly charismatic.

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25

Lúcio de Souza, Mayara Oliveira, Fernanda Menezes de Lima, Liliane da Silva Barbosa, Maria Eduarda Brêda Accorsi, Mariana Lima dos Santos, and Müller Ribeiro-Andrade. "Proposal for the use of morphometry as a sexing method for psittacine species Amazona amazonica, Amazona aestiva , Ara chloropterus , Anodorhynchus hyacinthinus , and Ara ararauna." Avian Biology Research, April 28, 2025. https://doi.org/10.1177/17581559251336691.

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Psittacides are birds characterized by a curved beak, zygodactyl feet and colorful feathers, with species varying in size and without apparent sexual dimorphism. They are among the birds most threatened with extinction, with around 31% of species in the Neotropical region in this condition. Reproduction of these birds in captivity is crucial for the maintenance and recovery of populations, with sex identification being essential in this process. Given the difficulty of differentiating between males and females, it is proposed to use external morphometry to determine sex in a population of parr

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