Weather significantly influences the migratory behaviour of night-migratory songbirds tested indoors in orientation cages

摘要: Each year, millions of birds migrate from their breeding grounds to overwintering sites and back. The success, duration effort such a long journey depend strongly on the meteorological parameters encounter en route. behaviour free-flying migratory those studied outdoors in orientation cages has been shown be influenced by local weather factors. However, only few, mostly descriptive, studies have analysed whether should considered when testing captive indoors cages. Here, we used statistical approach analyse how affect performance night-migrating songbird, garden warbler (Sylvia borin), tested Emlen funnels. Our results show that activity directionality is significantly atmospheric pressure. Together with previous studies, these suggest conditions an impact even during indoor experiments. findings emphasize importance mixing up and/or randomizing different any given night. Ideally, test night, same number each condition involved study. Thereby, documented effects will influence all experimental groups equally.