Okay, thanks for the extra information. I was hoping to hear he was only doing the pumping motion, but rarely, if ever, actually brining something up an out. That would be the feeding motions they make trying to feed mates, their young, or sometimes, us because of their bond with us. But, the fact that he is brining up undigested seeds and flinging it out is cause for concern. He is ill and he is going to need a check up from a vet who is competent with birds. It may be that just a quick check of a dropping sample will yield a diagnosis. Their droppings can tell us many things about their health. You need to get the gravel away from him immediately. Parakeets do not need it and if they have access and ingest too much, it can cause impaction any where from their crop, all the way through the digestive system. His crop may be so impacted that he is not able to get his seed further than that and it's coming back up. His increased appetite makes that even more suspect. He is starving because he can't get enough food down. A good vet can clear his crop and, at the same time, tell if the impaction has gone further into his digestive system. But this is serious. You cannot put off getting him in or you will lose him. In case you don't have a vet you trust, I'll give you links that I hope will help with that. Just stay away from the pet stores and don't waste your money on any of their over the counter "junk", no matter what they tell you. If they have any thing that would work, you would not be able to buy it without a prescription and you would definitely not foul the drinking water with it. For now you need to keep him out of drafts, and make sure she does not get chilled. Keep her as near 85F as possible. I hope this helps you and the little guy but if you have any more questions at all, don't hesitate to let me know. I'm also going to give you some other links to help you with proper diet information as well but your priority right now is a vet appointment asap. I'll keep the little guy in my thoughts. Patricia
Click here: Grit, Gravel and your Parakeet / Budgie
Click here: Hepatic Lipidosis
Click here: PetCareLibrary - Tumors in Parakeets (pvy.com)
Click here: Parakeet Medical and Safety Information
Click here: Parakeet Budgie and Keet FAQs and Info
Click here: Toxic and Safe Plants/Trees for Birds - Household Poisons
Click here: Birdsnways - Safe Plants & Trees for pet birds, pet parrots &exotic birds
Click here: - Budgie Nutrition
Click here: Diet: Safe & Toxic Foods
Obesity & Diets (budgies)
Click here: The Basics: Intro to Budgies / Parakeets
Click here: The Budgie and Parakeet Place - Care, Training, Pictures and More
Click here: BUDGIE CARE SHEET
Click here: More Birds Die as a Result of Air Fresheners: That Stinks!!
Click here: Bird Proofing Your Home: Household Hazards for Birds
Click here: Bird Proofing Your Home - Avoid These Pet Bird Hazards
Click here: The Silent Killer, by Joanie Doss
Click here: Parrots - Avian Vets Recommended - Judy Leach's Parrots - macaws, cockatoos, and african greys
Click here: Find your local Avian Veterinarian
Click here: Avian Veterinarians Recommended by Bird Breeders and Owners http://www.birdsnways.com/articles/abvpvets.htm
Click here: World Wide Avian Vet Listing
Click here: BirdsnWays - Avian Veterinarians - Vets - Vet Services for Pet Parrots & Exotic Birds
This one looks like an advertisement for Harrison pellets but they are only sold by vets so it's another good list to check. Click here: Harrison's Bird Foods is a family of certified organic pet bird diets that were formulated to make your bird as he
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