feed their babies
No.
Hummingbirds feed their babies insects or regurgitate nectar.
you have to feed it.
Mother's milk.
milk from its nipples
no they do not
no they do not
Many types of birds do eat beetles. Adult birds especially like to eat them so they can regurgitate them and feed their babies.
Blue footed booby parents regurgitate fish to feed their chicks.
So that the chick will live.
Worms I think...:)