Why don't birds fall down while sleeping in trees?
Why don’t birds fall down when they sleep in the tree?
In what manner do owls sleep? Why do humans fall asleep? Why do pigeons not live in forests? Why do birds chirp only in the morning, but not in the evening? Why do Owl stay awake at night? Why do birds fly from the tree during earthquake? Why do we fall asleep? Why do I fall asleep when sitting? Do birds cry? Why do birds stay at same place when they can fly? Why can't we fall asleep on some days? Why do dogs howl in their sleep? Do fish sleep? Why do we wake up in the middle of the night? And then fall right back to sleep? Why would dogs howl in their sleep? Why do mosquitoes not bite when you sleep in air conditioning? Why do birds chirp in the morning? Do spiders sleep? Do snakes sleep? Why do birds fly together? Why do birds sing in the morning? Why does birds fly? Why do dogs bark in their sleep? Why do we sleep during the night? How do snakes sleep? How do spiders sleep? Where do squirrels sleep? If a tree falls in the woods and nobody is there to hear it, does it make a sound? Why don't birds have teeth? If sleep leaves animals vulnerable to attack, why didn't we evolve to rest while awake?