The case of the roosters is interesting because scientists put them in the dark and they still crowed at dawn.

0xbitcoiner

I think all birds sing at sunrise and sunset. This is because they have a condition called "night blindness," where they can't see at all in dim light.

They communicate by singing before they go blind. They sing more loudly at sunrise because their blindness is passing, and they feel a great sense of relief, as if they're returning to life.

science

Animal_World

Roosters don't crow in the morning because of the sunrise

I think all birds sing at sunrise and sunset. This is because they have a condition called "night blindness," where they can't see at all in dim light.
They communicate by singing before they go blind. They sing more loudly at sunrise because their blindness is passing, and they feel a great sense of relief, as if they're returning to life.