Academic literature on the topic 'Willow ptarmigan'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Willow ptarmigan.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Willow ptarmigan"

1

Thomas, V. G. "Body condition of willow ptarmigan parasitized by cestodes during winter." Canadian Journal of Zoology 64, no. 1 (1986): 251–54. http://dx.doi.org/10.1139/z86-039.

Full text
Abstract:
Sixty-two adult male willow ptarmigan (Lagopus lagopus) were collected over 3 days in April 1979 from a single flock along the Hudson Bay coast of Ontario. Twenty-one ptarmigan contained cestodes (genus Raillietina) in the anterior of the small intestine and 41 were free of cestodes. Each ptarmigan was dissected into its principal voluntary muscles, liver, and intestinal components, and the entire body was subjected to neutral fat extraction. Parasitized willow ptarmigan had significantly heavier empty small intestinal weights than nonparasitized birds. All other variables pertaining to the fa
APA, Harvard, Vancouver, ISO, and other styles
2

Taylor, Peter. "Southerly movements of Willow Ptarmigan during the winter in and near the prairie provinces." Blue Jay 78, no. 4 (2021): 13–23. http://dx.doi.org/10.29173/bluejay6309.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Rodrigue, J., R. McNicoll, D. Leclair, and J. F. Duchesne. "Lead Concentrations in Ruffed Grouse, Rock Ptarmigan, and Willow Ptarmiganin Québec." Archives of Environmental Contamination and Toxicology 49, no. 1 (2005): 97–104. http://dx.doi.org/10.1007/s00244-003-0265-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Martin, Kathy. "Herring gulls prey upon female willow ptarmigan." Canadian Journal of Zoology 63, no. 4 (1985): 984–85. http://dx.doi.org/10.1139/z85-146.

Full text
Abstract:
On 12 June 1984 at La Pérouse Bay, Manitoba, Canada, 1 saw three herring gulls attack, kill, and consume an incubating adult hen willow ptarmigan and her clutch despite vigorous defence behaviour by her mate. Possible attacks by gulls or jaegers occurred also on two incubating hens in 1983.
APA, Harvard, Vancouver, ISO, and other styles
5

Parker, Howard. "Compensatory Reproduction through Renesting in Willow Ptarmigan." Journal of Wildlife Management 49, no. 3 (1985): 599. http://dx.doi.org/10.2307/3801679.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Xiaochen, Yu, Gao Zhiyuan, and Tian Jialong. "Recent status of Willow ptarmigan in China." Journal of Forestry Research 9, no. 2 (1998): 133–35. http://dx.doi.org/10.1007/bf02865005.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Pedersen, Åshild Ø., Lasse Asmyhr, Hans Christian Pedersen, and Nina E. Eide. "Nest-predator prevalence along a mountain birch - alpine tundra ecotone." Wildlife Research 38, no. 6 (2011): 525. http://dx.doi.org/10.1071/wr11031.

Full text
Abstract:
Context Nest predation is a major factor influencing life history and population dynamics of ground-nesting birds. The transitions between the northern boreal mountain birch forests and the low-alpine tundra are important habitats for the willow ptarmigan, Lagopus lagopus (Linnaeus, 1758). During the past decades, these landscapes have been extensively developed with cabin resorts in southern Norway, which has led to an increased number of roads and foot paths in relatively undisturbed habitats. Aims The aim of the present study was to investigate relative nest-predation rates in elevation gra
APA, Harvard, Vancouver, ISO, and other styles
8

Pistone, D., M. Lindgren, P. Holmstad, et al. "The role of chewing lice (Phthiraptera: Philopteridae) as intermediate hosts in the transmission of Hymenolepis microps (Cestoda: Cyclophyllidea) from the willow ptarmigan Lagopus lagopus (Aves: Tetraonidae)." Journal of Helminthology 92, no. 1 (2017): 49–55. http://dx.doi.org/10.1017/s0022149x17000141.

Full text
Abstract:
AbstractThe cestode Hymenolepis microps is an intestinal parasite of tetraonid birds, including the willow ptarmigan (Lagopus lagopus). This parasite is able to maintain a high prevalence and intensity throughout the year, even in a subarctic environment in bird populations with relatively low host densities, indicating effective transmission routes. Willow ptarmigan consume mainly vegetal material and active consumption of invertebrates is confined to the first two or three weeks of life. Ptarmigan are infected by different species of ectoparasites, of which two species of feather lice, Lagop
APA, Harvard, Vancouver, ISO, and other styles
9

Steen, Johan B., Hans Chr Pedersen, Kjell Einar Erikstad, Ketil Boye Hansen, Karsten Hoydal, and Asbjorn Stordal. "The Significance of Cock Territories in Willow Ptarmigan." Ornis Scandinavica 16, no. 4 (1985): 277. http://dx.doi.org/10.2307/3676691.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sandercock, Brett K. "Free-Living Willow Ptarmigan Are Determinate Egg-Layers." Condor 95, no. 3 (1993): 554–58. http://dx.doi.org/10.2307/1369599.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Willow ptarmigan"

1

Kozma, Radoslav. "Inferring demographic history and speciation of grouse using whole genome sequences." Doctoral thesis, Uppsala universitet, Zooekologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-299926.

Full text
Abstract:
From an ecological perspective, knowledge of demographic history is highly valuable because population size fluctuations can be matched to known climatic events, thereby revealing great insight into a species’ reaction to past climate change. This in turn enables us to predict how they might respond to future climate scenarios. Prominently, with the advent of high-throughput sequencing it is now becoming possible to assemble genomes of non-model organisms thereby providing unprecedented resolution to the study of demographic history and speciation. This thesis utilises four species of grouse (
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Willow ptarmigan"

1

McGrath, Darrin Michael. The Newfoundland partridge. DRC Pub., 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Willow ptarmigan"

1

Martin, Kathy, Cathy Doyle, Susan Hannon, and Fritz Mueller. "Forest Grouse and Ptarmigan." In Ecosystem Dynamics Of The Boreal Forest. Oxford University PressNew York, NY, 2001. http://dx.doi.org/10.1093/oso/9780195133936.003.0011.

Full text
Abstract:
Abstract The Kluane system harbors five species of grouse. Two species, spruce grouse (Falcipennis canadensis) and ruffed grouse (Bonasa umbellus), inhabit forest year-round. Three species of tundra grouse, willow ptarmigan (Lagopus lagopus), white-tailed ptarmi­ gan (L. leucurus), and rock ptarmigan (L. mutus), inhabit the alpine and subalpine above treeline in the Shakwak Valley most of the year. Willow ptarmigan descend into the open forest from October to March. All grouse are almost exclusively herbivores; females dur­ ing egg laying and young chicks also eat a variety of invertebrates. Spruce grouse are conifer specialists, foraging principally on spruce and pine in winter and on forbs and leaves, fruits, and seeds of shrubs in summer and autumn (Boag and Schroeder 1992). Spruce grouse spend significant amounts of time foraging on ground vegetation in sum­ mer and thus might compete with hares for food during the breeding season. Ruffed grouse feed principally on buds and leaves of deciduous trees (aspen, bog birch) and shrubs and forbs seasonally (Rusch et al. 2000). Ptarmigan feed on willow buds and leaves through­ out the year and on flowers, leaves, seeds and berries of sedges, ericaceous shrubs, and mosses in season (Braun et al. 1993, Hannon et al. 1998). Both forest grouse and ptarmigan form part of the herbivore trophic level year-round in Kluane, as their wide-ranging predators (goshawk, golden eagle, harrier, coyote, lynx, fox, wolverine, wolf) hunt in both forest and adjacent alpine areas.
APA, Harvard, Vancouver, ISO, and other styles
2

"Chapter Seventeen. Mechanisms Underlying Variation in Renesting Ability of Willow Ptarmigan." In Ecology, Conservation, and Management of Grouse. University of California Press, 2019. http://dx.doi.org/10.1525/9780520950573-019.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Willow ptarmigan"

1

Ehrich, Dorothee. "The Importance of Willow Thickets for Willow Ptarmigan in Shrub Tundra: The More the Better?" In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0214.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Potapov, Roald. "Willow and Rock Ptarmigan Monitoring in Russia: An Historic Overview." In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0221.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Tarasov, Vladimir. "Summer Flocks of the Willow Ptarmigan in the North of the Yamal Peninsula." In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0219.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Callahan, Chris. "The Impact of Population Density on Body Condition of Newfoundland Adult Willow Ptarmigan." In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0128.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Falkdalen, Ulla. "Relations Between Willow Ptarmigan (Lagopus Lagopus) Density and Gyrfalcon (Falco rusticolus ) Breeding Performance in Sweden." In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0217.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Tarasov, Vladimir. "Population Dynamics of the Willow Ptarmigan in the North of Yamal Peninsula and the Factors Affecting Them." In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0302.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mossop, Dave. "Long-term Studies of Willow Ptarmigan and Gyrfalcon in the Yukon Territory: A Collapsing 10-Year Cycle and Its Apparent Effect on the Top Predator." In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0206.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Gilg, Olivier. "Will Collared Lemmings and Their Predators be the First Vertebrates to "Fall Over the Cliff" in Greenland Due to Global Climate Changes?" In Gyrfalcons and Ptarmigan in a Changing World. The Peregrine Fund, 2011. http://dx.doi.org/10.4080/gpcw.2011.0113.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!