Birds that begin with the letter a:
oriole
quail
Robin.
African Crowned Eagle
crane
Golden Eagle Griffon Vulture
I'd check that "I" is definitely the fourth letter, because "egret" could be the answer.
Toucan
Anden, Allen, Alden, Anton, Avery...
Robin
Yes, there is a wading bird called the Bittern. Its from the Ardeidae family. Its from the Animalia kingdom. Its in the Aves class. They are short necked and secretive birds.
a loon