Is Photoperiodism a Factor in the Migration of Birds?

Authors

G. Eifrig

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Recommended Citation

Eifrig, G. (1924) "Is Photoperiodism a Factor in the Migration of Birds?," The Auk: Vol. 41: Iss. 3, Article 4.
Available at: https://digitalcommons.usf.edu/auk/vol41/iss3/4