It is not unusual for a budgie (parakeet) to molt in the winter. You might want to watch out because usually they are cranky when they molt! (But they like having those itchy new feathers to be scratched)
No
My bird is 13 months and is always in a moult. Get their wings clipped and never leave them on their own because they get scared and moody
The ptarmigan does use camouflage by moulting white, winter plumage to brown spring plumage.
Your, budgie may be suffering from an unknown disease, seek medication for it ASAP.
Vancouver
Mid-winter.
The girl budgie would attack the new boy budgie and not the old girl budgie because she is used to the other girl budgie and is not familiar to the new boy budgie.
Vancouver, Canada
This depends entirely on where you live, and what the budgie is used to. Budgies are suited to hot climates, which generally means warmer winters. They are not cold-weather birds, and should either be brought indoors during winter, or have a heavy canvas protective coat to drape over the aviary at night. If you live in a region which is prone to frosts or even snow, your budgie is not conditioned to those sorts of cold extremes. If you have a budgie in just a small cage, it should be brought indoors at night.
The best food for pet budgies is fresh fruit like they eat in their natural climate. They are known for eating lots of fruit and therefore this is good for their health. Recently I have purchased Vitapol Vitaline Moulting Food for my pet from Myunikorn.In.
if they aren't eating they are moulting
budgie = Wellensittich