whats wrong with this chick! please help

[missmad]

this poor chick is nearly 4 weeks old he has poor feather development and i took mum out about 4 days ago as i thought she was plucking him as he had bald patches starting on his head and a few other feather injuries and spots of blood. anyhow dad has been looking after him since then and more feathers lost and although he seems healthy and alert he doesnt look so good, what could be the problem here? do i take him out of nest and handfeed now or leave him and hope for the best with dad....
http://images.trademe.co.nz/photoserver/12/27602112_full.jpg

[Joey]

well yes I would take jim/her out and handfeed it...Thats a severe feather plucking!:eek: But there could be other problems like french molt or it could be a feather dustur I don't know but I would handfeed it just becuase it might have a disease:(