Yeah, I've seen this in a few forms, all I can say is, if you find yourself permanently exhausted, make sure you eat and drink properly, and get enough rest, always take care of number one, bud.
If you find an exhausted pigeon, that has a tag in your backyard, it's probably someones homing pigeon, put out some seeds, and a bowl of water, give it some room to rest, and it'll be on it's merry way in a day or two
If you find an exhausted pigeon, that has a tag in your backyard, it's probably someones homing pigeon, put out some seeds, and a bowl of water, give it some room to rest, and it'll be on it's merry way in a day or two