How often should a parakeet preen itself?

Do most male and female birds look the same if they are the same species? What are the special features of a Parrot? What bird deliver notes? How do you tell a male macaw from a female macaw? What do penguins do for fun? Is there flying goats? What do you do after your canary laid an egg? Are sandpipers mammals? Do wolves eat hawks? How long does it take to hatch a Drumpler in your Singing Monsters? What do you call an owl with one leg shorter than the other? Will owls eat a chipmunk? I am an animal lover and want to get a cockatiel. We have had many animals in past including parakeets so I know how to take care of birds. My parents said no. How can I convince them to get a bird? What is the emus food chain? What is the size of a baby cuckoo? How far can a raven fly? What is the biggest bone in a birds body? What is an owl cry called? Do birds have a brain? What is a gooses name?