I am not sure about plucking. It's really more like stunt and abnormal growth. I've separated the mom because she attacked the middle one and now the babies are growing out down, still patchy though, and they are over 5 weeks old.
Hi, I don't know if anybody still reads this thread, but I have some questions. My pair of parakeets also just gave birth to three babies about 4/5 weeks old. The babies also have no body down/feather just like yours in the pictures. I am a little worried because everywhere I look, baby...