No abstract available
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
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Review
MeSH terms
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Animals
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Birds / physiology*
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Environment
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Female
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Gonadal Steroid Hormones / physiology
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Gonadotropins, Pituitary / physiology
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Hypothalamo-Hypophyseal System / physiology
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Light
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Male
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Periodicity
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Reproduction*
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Seasons
Substances
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Gonadal Steroid Hormones
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Gonadotropins, Pituitary