African Grey is similar to the Denver Zoo's Bird World -- only you can take the store's feathered friends home with you. In addition to its namesake parrot, the shop also sells cockatoos, cockatiels, parakeets and finches. Though it's hard not to go a little bird-brained from all the squawking in the place, the exotic animals make the racket endurable. Just be sure to watch your head. Like the birds at the zoo, some of the winged things are allowed outside their cages.