The simple answer to the question of where do songbirds sleep at night is that birds find secluded places to catch some shut-eye. The details vary by bird species. Some birds like woodpeckers cling to tree trunks, while waterbirds like ducks and geese often float in the water to avoid predators. Nocturnal fliers like whip-poor-wills and owls rise as the sun goes down and hunt at night.
Many birds will also take a power nap at some point during the night, particularly on long migration flights. This can help them make up for lost sleep and keep them alert. Some birds can even sleep with one eye open! This is possible because of the way that the bird’s brain sends information to only half of their eyes. This allows the bird to spring into action if they sense danger.
Although it might seem strange to hear a bird sing at night, it is an important part of their life. It helps them establish their territory and attract mates, as well as to warn other birds of approaching predators. In addition, singing can help a bird warm up and adjust to changing weather conditions. Research with zebra finches has shown that certain brain neurons associated with song can be activated during sleep, but this does not necessarily prove that the birds are dreaming. It is likely that the activation is more a sign of reinforcement than proof that birds dream.