by Pajarita » Sun Nov 18, 2018 10:53 am
Well, there is your problem: she is alone and hormonal because of the light schedule and diet. Aviary species don't do well on their own once they become sexually mature and are much more diet-dependent than companion species when it comes to breeding, if to this, you add the fact that she is being kept at a human light schedule and she is alone, you get what people like to call 'behavioral issues' which, in reality, have a physical cause.
Let me explain. Birds [ALL birds] are photoperiodic -this means that light is what triggers or stops hormone production so, when you keep a bird at a human light schedule [which means you expose the bird to artificial light when it's dark outside], the bird produces sexual hormones all the time [something that NEVER happens in the wild]. Smaller bird species are also what we call 'opportunistic breeders' which means that regardless of what season it really is, if the bird has enough food and this food is rich enough, it will breed. When you free-feed [leave a food bowl out for the bird all day long] protein food [seeds, nuts, pellets, etc], you are providing a breeding season diet all year round [something that NEVER happens in the wild]. Last but not least, you have an aviary species and not a companion species and this makes it worse for her because she is hormonal from the light schedule and the diet but all alone. Little birds like budgies, cockatiels, parrotlets, beebees, etc need to have companions of their own species because they simply do not bond with people as deeply as the companion species [mind you, I don't agree to keeping companion species alone, either].
The thing about parrots is that they are not domesticated so the needs of our pet birds are identical to the needs of the wild birds so, unless one makes a very huge effort and keeps them as close as possible to what nature decreed their lives should be, they suffer and, when they suffer, they scream and/or pluck and/or bite.
My recommenation to you is to keep your bird to a strict solar schedule with full exposure to dawn and dusk, to allow her to come out to fly at least 4 hours a day, to change her diet to gloop, chop or mash with raw produce in the am and just a level tablespoon of budgie seed in the pm and to get her a male so she can have a mate/companion of her own. If you do all this [it won't work right away, you need to wait for her endocrine system to go back to what it should be and that's going to take months], you will have a much happier and healthier bird -and she won't scream at all.