The pigeons in the city are free. You can just take them. They were actually domesticated. They don't have the same separation anxieties and mental issues that parrots can get.
Turns out theres a hard limit to the amount of geese you can take from industrial parks before they tell their goose friends or something, cause they stop coming back.
Parrots live for 70 years and have the same intelligence as a toddler. Meaning they are smart enough to talk but don't know when to shut up. They also have bolt cutters for faces and their primary role in nature is seed disperser.