Looking for some help please, I have a pigeon slightly under a year old and she has been showing signs of illness. She seems puffed up and a little hunched over. She has also been opening her mouth wide and I obseved her trying to throw up. She has been keeping company with a male and it appeared as if they were preparing for eggs. I checked her bottom and saw no sign of any egg, her crop area looks puffed. Can anyone offer any help or advice, I'm worried about her. Thank you