Activity rhythm in High Arctic Svalbard ptarmigan ( Lagopus mutus hyperboreus)
Feeding activity was recorded in captive Svalbard ptarmigan (Lagopus mutus hyperboreus) under natural photoperiodic conditions at 70°N and 79°N. At 79°N, activity was intermittent and non-circadian in summer, when the sun was permanently above the horizon, and in midwinter, when the sun was permanen...
| Published in: | Canadian Journal of Zoology |
|---|---|
| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1998
|
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/z98-173 http://www.nrcresearchpress.com/doi/pdf/10.1139/z98-173 |