How birds survive the winter [videorecording].

Published:: University Park, PA : Penn State University Audio-Visual Services, [1989]
Copyright Date:: ©1989
Physical Description:: 1 videocassette (8 min.) : sound, color ; 1/2 in.
Additional Creators:: Rose, Allan and Pennsylvania State University. Audio-Visual Services

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Summary:

Documents the behaviors of nonmigratory birds that enable them to survive in a cold northern climate, including breathing prewarmed air, protecting extremities, fluffing feathers, shivering, countercurrent heat exchange, sun basking, burrowing under the snow, using natural and man-made shelter, communal roosting, and torpor. Recorded during the winter months in central Pennsylvania.

Subject(s):

Birds—Behavior

Creation/Production Credits Note:

Written and produced by Allan Rose, Jr. and Royal Alvis.

Participant/Performer Note:

Peg French.

Technical Details:

VHS.

View MARC record | catkey: 565475