Welcome to PT. What exactly do you need/want help with? There's a TON of information on this site, but someone will gladly answer your questions. Just ask away.
What kind of birds are you getting? I've got a small ex-chicken coop the same size. 4 x 4 x 4.......I tried keeping 4 birds in it at one time (2 mated pairs) and it worked out ok....but wasn't ideal. It's PERFECT for one pair of birds though. I also have an 4 x 8 aviary attached to it. 3 feet isn't real big for an aviary and 4 birds.
What kind of birds are you getting? I've got a small ex-chicken coop the same size. 4 x 4 x 4.......I tried keeping 4 birds in it at one time (2 mated pairs) and it worked out ok....but wasn't ideal. It's PERFECT for one pair of birds though. I also have an 4 x 8 aviary attached to it. 3 feet isn't real big for an aviary and 4 birds.