It really depends on the type of bird, but they must be kept warm, dry, and fed. Different birds will need to eat different things. Many pet or feed stores carry baby bird food that can be mixed with water and fed with a dropper or syringe. Make sure you pick up the correct type for your bird.
Well, baby chickens are yellow, but most birds are just grey when yhey are newly hatched.
a snakelet, a hatchling (just hatched) or a neonate (new-born)
Sloths are placental mammals, just like humans. Baby sloths are born the same way baby humans are.
There is a very good site to help you if you want to learn about how to help and care for baby birds. See Sources and Related Links further down this page.
Yes, most rats are suprisingly hatched from eggs, just like birds
All birds are hatched from eggs. Birds of prey rip up pieces of meat and feed it to their young where other birds create milk in their crops (a pouch just above their beaks) and feed the milk to their young
This answer doesn't just apply to Birds'...
No! Just except the baby and raise him/her as your child.
Baby cockatiels do not have to be banded if you plan to just keep them yourself. If you are a breeder or if you plan to sell the young birds, you should band your baby birds.
only when it's cold
they just get together i think! then they have baby birds
Just the same as any other mammal.