USGS · 5221099
Sleeping distance in wolf pairs in relation to the breeding season
Abstract
Changes in sleeping distances in 11 pairs of wild wolves ( Canis lupus ) were studied to determine if they correlated with stages of the breeding cycle. Aerial radio-tracking and observation were the techniques used. Members of most pairs slept less than 1 m apart at least sometime during proestrus and the first half of the breeding season, but slept farther apart during the second half and after breeding. These changes might be related to differences in serum estrogen levels.
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L. David Mech, Steven T. Knick. 1978. Sleeping distance in wolf pairs in relation to the breeding season. https://doi.org/10.1016/s0091-6773(78)91631-0
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