Kropotkina M. V. RussiaМоскваA. N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 33 Leninsky Prospect, Moscow 119071marriyashka@yandex.ru Author's articles Seasonal changes in the hormonal response of Eversmann hamster (Allocricetulus eversmanni, Cricetinae, Rodentia) males to conspecific females’ olfactory signals