The problem on the possible mechanisms of gonads transition to a refractory phase in birds after the reproduction is discussed on the basis of the literature data and results of the authors' own investigations. The season ...

Data from literature and results of studies in the role of external factors for determination of birds reproduction periodicity are generalized. It is shown that the character of birds' reproduction dependence on environmental ...

Data from literature and results of the author's investigations concerning mechanisms of light effect on the reproduction function in birds are generalized in the article. Light receptors and conductors as well as peculiarities ...