What bird can't sing when it's raining or windy?

Reason: Chickens have feathers. They crow at dawn, but they don't crow when it rains or windy.

Cock crowing is controlled by internal biological clock, but external light and sound stimulation can also induce rooster crowing, but the influence of external stimulation on rooster crowing is also controlled by internal biological clock.

Cockcrow is also related to chicken androgen. Capons and hens can't crow precisely because they don't have androgen. If they are injected with androgen, hens will also start to crow.

Extended data

Except for a few birds, such as owls and Siniperca chuatsi (a bird of prey similar to owls, the difference is that owls have two feathers similar to cat ears on their heads, but Siniperca chuatsi does not), other birds are invisible at night. So is the rooster. At night, they may be attacked at any time, so they feel very uneasy.

In the morning, the rooster's eyes can see again, so he is very excited. In order to express this excitement, I began to sing excitedly. This is also the rooster's instinctive response to light stimulation. After a long time, morning singing has become a habit of roosters.