Loosing Feathers?

[Peregryphon]

One of my young birds (six weeks old) has a partially bare patch on her neck. I don't know why. Is it mites? cannibalism? Is it normal? How concerned should I be? None of her siblings have this problem.
(These chicks have several different breeds in them. Their mother is silkie/ameraucana, and their father is unknown.)
They don't like getting their picture taken so the images are not the best, sorry.

 

[Peregryphon]

It appears to be cannibalism. I caught one of the others pecking her there. No signs of mites. Any recommendations?

 

[junebuggena]

It's called feather picking, and it is usually caused by either too little protein or overcrowding stress.

 

[aart]

It's called feather picking, and it is usually caused by either too little protein or overcrowding stress.

Yes.....or both.

 

[Folly's place]

x2. Mary