You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Cryptic Behaviour in Moulting Hen Willow Ptarmigan Lagopus l. lagopus during Snow Melt
Johan B. Steen, Kjell Einar Erikstad and Karsten Høidal
Ornis Scandinavica (Scandinavian Journal of Ornithology)
Vol. 23, No. 1 (Jan. - Mar., 1992), pp. 101-104
Stable URL: http://www.jstor.org/stable/3676433
Page Count: 4
You can always find the topics here!Topics: Hens, Snow, Plumage, Molting, Pigmentation, Melting, Territories, Food, Animal camouflage, Predators
Were these topics helpful?See something inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
We studied feeding behaviour of hen Willow Ptarmigan moulting from white winter plumage to pigmented summer plumage during the progress of snow melting. While still mostly white, the hens usually sat on the snow while feeding on protruding willow and dwarf birch; when partly pigmented on the back, they preferred the border zone between snow and bare ground; and when mostly pigmented they fed exclusively on bare ground. When, due to snow thaw, the hens could no longer reach the protein rich willow, they fed on the protein poor but lower dwarf birch. The results suggest that the hens' feeding strategy during snow melting is a compromise between food quality and optimal camouflage.
Ornis Scandinavica (Scandinavian Journal of Ornithology) © 1992 Nordic Society Oikos