Question for more experienced users . . . My three racing pigeon pigeons all seem healthy, of good weight and good, consistent flyers. I took them out for a flight today and opened the crate. As always, they moved to the open door and got ready to fly. One then began regurgitating a small number of dry whole seeds (6?) , looked around seemingly happily, and then flew off. The other birds followed her. I'd never seen this before. Should I worry yet? There's no other signs of vomiting.