Plucked cloaca/vent area

[Alexxxx88]

Hello everyone,

yesterday I noticed that my cornish hen (she is 1 year old) lost almost all her white and black feathers near her cloaca. Until last week she had them.
it doesn't look like they are mites or lice but I sprayed garlic solution+water in that zone.
Maybe it happened when she started making eggs, some weeks ago for she hatched her first egg.

I don't know what's going on and if is it ok or not.

 

[sourland]

It's likely that other birds in the flock are feather pecking/plucking her.

 

[Alexxxx88]

It's likely that other birds in the flock are feather pecking/plucking her.

I'm not sure because other hens are leghorn so they are smaller and less aggressive than a cornish.
Its rare seeing my hens fighting.
Can be a a patchy moult?