Photoperiod in the Life of Passerine Birds of the Subarctic Region
V. N. Ryzhanovsky, S. P. Paskhalny
Pages: 145–159
Abstract
The effect of photoperiodic conditions of the Subarctic region on the feed and sexual activities of bird species wintering at the latitude of the Arctic circle, on time constraints, duration and completeness of post-juven
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