No way is an organic grain fed bird of paleo quality. Perhaps if it was truly free range with access to lush vegetation and only supplemented with small portions of grain, then it would be worth it.
If you like bird meat I would recommend hunting them yourself. Wild Goose is delicious raw, and some of them that pass through the local parks are so habituated to people feeding them bread, you could kill them with your bare hands. The little bit bread needed to lure them in isn't nearly as bad as birds in cages fed all grain. Just be mindful of your local laws, wouldn't want anyone to go to jail for poaching.