I'd really recommend you see your avian vet...they can really give you tons of insight. Greys are such complex birds and unfortunately feather plucking isn't always an easy answer/fix.
thanks for the quick reply....it's actually a question for a friend of mine but i will be sure to let him know what you said.....once again thanks for the reply
I have a CAG, fortunatly he hasn't plucked, but he's only a little over a year.
Plucking is generally caused by something in their life, change of scenery, schedule, not getting the proper attention our nutrition.
If it's really bad you should take the bird to the vet and they can get the bird one of those collars, but the first step is finding what's causing this.
0.1 Charcoal Corn, Nagini||0.0.1 King Intergrade, Ekans|| 1.0 Leopard Gecko, Havok||1.0 Pastel Mot Corn, Solstice
1.1 birds,1.1 Bettas, 0.0.5 Community fish and Inverts,1.0 Rat, 1.1 Hamster.