One of our youngsters (fledged 2 months ago) is almost completely bald apart from his flight and tail feathers. Feather loss began on the budgies tummy and then I noticed others picking at its head. We have seperated the little fellow but I think the feather loss is worse. The flight and tail feathers are still all there and appear as if they have grown normally; the budgie can fly normally.
Can PBFD progress this fast (1 month) to a bird that was fully feathered to one that is almost bald apart from the flights and tail feathers. I have seen a corella is this exact same condition and have been told it is a chronic plucker. My understanding is that PBFD progesses over many months and years, not a month.
We have this little guy well away from the others, feeding a good diet and waiting to see how things progress- is this a reasonable course of action. He looks to be of good weight and looks healthy.
Cheers.