The idea is neat and sounds good. However there is a reality part to this especially in the U.S. Depending on the bird ( powdery birds) there would be health regulations hurdles to over come. Many people in offices, or in general , have allergies to birds. Offices can be climate controled, usually by cool air in summer, where bird dust can interfere with ducts. You have a president or CEO of company to deal with, they aren't always forgiving. Bird screaming can interfere with phone calls, or hearing on phone, especially if an emergency is involved. If communication wasn't relayed properly because of background screaming, you then got serious problems on hand. Though as one mentioned, there is therapy birds, in nursing homes. I have seen that. Or in relatively small offices that associate with animals. That might work. But big businesses or corporations, not so much.