Try giving them a tonic in the water,you can get this from a pet shop.A cyst is a fatty lump and you could check by putting( budgerigar cysts ) in to google images ).
It could be the females, my budgies who were 2 female had bumps, however the male did not. Budgies are so adorable by the way! Haha
It could be an impacted croup. My turkeys had that once. I dont know if budgies have croups though. That's my guess.
I got 12 budgies two weeks ago and this morning, I noticed that some of them have a lump on their chest. They are also not eating their seeds like they usually do. I thought it was an egg but both males and females have it. My budgies don't eat any fruits and vegetables. All they eat is seeds and millet. I have tried to feed them finely chopped apples, carrots, and celery but they wouldn't even touch it. Is it normal? Would the lump go away on its own?
