I recently noticed that on Butterfly my newest hen that her flight feathers on her left wing are not growing back. The feathers on her right side are growing great. When I got her from the store both sides looked rather bad as in part of the stem(?) of each feather seemed to just be sticking out. I know the store I buy from and they always are very careful when clipping their wings so I figured maybe it was something that happened while with the other budgies.
On the other end her health is great and she is very happy...minus when the spray millet disappears after her and Shout eat it all.