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Tuesday, May 12, 2020 | History

2 edition of A summary of data relative to a recent invasion of willow ptarmigan found in the catalog.

A summary of data relative to a recent invasion of willow ptarmigan

by L. L. Snyder

  • 86 Want to read
  • 19 Currently reading

Published by University of Toronto Press in Toronto .
Written in

    Subjects:
  • Ptarmigans

  • Edition Notes

    Statementby L.L. Snyder and T.M. Shortt
    SeriesOccasional papers of the Royal Ontario Museum of Zoology -- no. 3
    ContributionsShortt, T. M., Royal Ontario Museum of Zoology
    The Physical Object
    Pagination4 p. :
    ID Numbers
    Open LibraryOL25336577M
    OCLC/WorldCa224067448

    They are Willow, Rock and White Tailed Ptarmigan. They look just like small grouse, weighing from 10 and half ounces to about 1 and half pounds. The Willow Ptarmigan live closest to timberline, Rocks on the middle slopes and low ridges and the White Tailed near snowfields and glaciers. They migrate back and forth in an area of about a hundred. This is a list of recognized content, updated weekly by JL-Bot (talk contribs).If an article is missing from the list, make sure it is tagged (e.g. {{WikiProject Birds}}) or categorized correctly. See WP:RECOG for configuration options.

    Ptarmigan stock photos and images () Best Match Fresh. Refine. Back Page of 5 Next. Display Mode. Stock Image by gentoo 1 / 62 Willow Ptarmigan Stock Photography by Birchside 4 / Willow Ptarmigan Stock Photography by Birchside 3 / Ptarmigan Lake as Seen From the Top of Ptarmigan Trail Stock Photographs by dfikar 1 / 8 Ptarmigan. A male willow ptarmigan wheels in the air in the Kenai Mountains in May (Photo by Steve Meyer) The ruckus coming from behind me, down the mountain slope, was unintelligible except for a few words too explicit for public consumption. Looking over my shoulder, the cause became quite apparent.

    John Theberge is the author of The Ptarmigan's Dilemma ( avg rating, 36 ratings, 6 reviews, published ), Wolf Country ( avg rating, 26 rating 4/5. Alaska Department of Fish and Game. Beluga whale acoustic signal classification using deep learning neural network models Zhong, M., M. Castellote, R. Dodhia, J. L. Ferres, M. Keogh, and A. Brewer. Beluga whale acoustic signal classification using deep learning neural network models.


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A summary of data relative to a recent invasion of willow ptarmigan by L. L. Snyder Download PDF EPUB FB2

A summary of data relative to a recent invasion of willow ptarmigan Item Preview remove-circle A summary of data relative to a recent invasion of willow ptarmigan by Snyder, L. (Lester Lynne), ; Shortt, T. M; Royal Ontario Museum of Zoology. Publication date Pages: Snyder, L. and Shortt, T.

MA Summary of Data Relative to a Recent Invasion of Willow Ptarmigan. (Occas. Papers of the Royal Ontario Museum of Zool., No. 3, J )--An invasion extending from Alberta to Quebec is discussed with reference to periodic increases in the species. Vol. LII] Recent Literature. Snyder, L. and Shortt, T.

M.-A Summary of Data Relative to a Recent Invasion of Willow Ptarmigan. (Occas. Papers of the Royal Ontario Museum of Zool., No.

3, J )-An invasion extending from Alberta to Quebec is discussed with refereilce to periodic increases in the species. This customary and traditional use summary for ptarmigan in Unit 19 provides a description of customary Dena’ina Athabascan speakers refer to willow ptarmigan as – data book, Alaska Migratory Bird Co-Management Council.

Alaska Department of Fish and Game, Division of Subsistence Special Publication Size: 1MB. ptarmigan. Willow Ptarmigan breed farther to the south in Canada and Alaska than do Rock Ptarmigan, and they are known to migrate (Aldrich ).

Snyder () noted that Willow Ptarmigan have migrated to the northern part of Minnesota, and Stanford (I9 14) reported that three were collected in Glacier National Park, in the winter of I9 Rock ptarmigan (Lagopus muta) and willow ptarmigan (L.

lagopus) are Arctic birds with a circumpolar distribution but there is limited knowledge about their status and trends across their. By the time the breeding season arrives, Willow Ptarmigan cocks, or males, have distinctive rufous chestnut heads, necks, and chests, whereas the remainder of their bodies is white.

When the moult is completed in summer, the entire bird, except for the lower abdomen and wings, is chestnut brown. The alternative prey hypothesis revisited: Still valid for willow ptarmigan population dynamics Ptarmigan and rodent data were collected during a national program of line-transect sampling.

The ptarmigan is unique among birds for molting into snow-white plumes for half the year. In fact the three species of ptarmigan—rock, willow, and white-tailed—may be among the best-adapted birds for surviving the frigid winter temperatures of northern climes and high elevations.

Recruitment of juveniles is important for the size of the next year’s breeding population in many bird species. Climate variability and predation may affect recruitment rates, and when these factors are spatially correlated, recruitment rates in spatially separated populations of a species may be synchronized.

We used production data from an extensive survey of Willow Ptarmigan from to Cited by: 7. den Herder et al. () predicted the willow ptarmigan to be among the game species most sensitive to high reindeer densities owing to the willow ptarmigan's strong reliance on willow shrubs as food and cover (Weeden,Moss,Hakkarainen et al.,Watson and Moss,Tape et al., ).Cited by: A summary of data relative to a recent invasion of willow ptarmigan by Snyder, L.

(Lester Lynne), ; Shortt, T. M; Royal Ontario Museum of Zoology. Willow ptarmigan is prone to collide with turbine towers. Using contrast painting to the turbine towers at the Smøla wind‐power plant in Central Norway resulted in significantly reduced number of ptarmigan carcasses found, emphasizing the effectiveness of such a relatively simple mitigation measure.

Willow ptarmigan eat willow buds, willow twigs, and a little birch. When the snow melts, their fare includes insects, overwintered berries, new leaves and flowers. Ptarmigan are sociable in winter and usually feed and roost in the snow close together.

In spring flocks of several thousand sometimes appear en route to their breeding grounds. State bird: willow ptarmigan, adopted by the Territorial Legislature in It is a small (15–17 in or – mm) Arctic grouse that lives among willows and on open tundra and muskeg.

Plumage is brown in summer, changing to white in winter. The willow ptarmigan is common in much of Alaska. State fish: king salmon, adopted The willow ptarmigan was adopted as the state bird of Alaska in Status. Widespread and not uncommon in its remote habitat, the willow ptarmigan is classified as a species of "Least Concern" by the IUCN.

This is because, even if, as is suspected, numbers are declining slightly, it has a very wide range with a total population estimated at forty million : Aves. Bird: Willow Ptarmigan Interesting Facts Russia controlled most of the area that is now Alaska from the late s untilwhen it was purchased by.

Willow ptarmigan has circumpolar distribution. In Canada, it occupies higher western mountain elevations and tundra habitats as far north as Melville Island. Rock ptarmigan, the most northern grouse, prefer habitats higher and drier than those of willow ptarmigan.

Both are strong fliers but rock ptarmigan are more migratory, moving from high. United States - United States - Presidents of the United States: The table provides a list of the presidents of the United States. The table provides a list of the.

This book has been cited by the following publications. you will be asked to authorise Cambridge Core to connect with your account. () Sustainable harvesting strategies of Willow Ptarmigan in a fluctuating environment.

Ecological Applications, 12. of Willow Ptarmigan ROGIER C. GRUYS’ (Received 22 June ; accepted in revised form 22 March ) ABSTRACT. Willow ptarmigan (Lagopus lagopus alexandrue) in northern British Columbia leave their breeding areas during autumn and winter.

The movements differ between males and females.Whilst potentially benefiting from shrub expansion, ptarmigan play an active role in altering the architecture and productivity of arctic shrubs through heavily browsing them. A trophic feedback loop may result, where selective browsing by ptarmigan curtails the expansion of preferred willows, while indirectly enhancing the expansion of other.Willow Ptarmigan are usually monogamous, but 5–9% of males may be polygynous.

Unusual for grouse, pairs remain together from the beginning of the breeding season until their chicks are independent. This is the only grouse in which the male is regularly involved in parental care.