Here's the photos: http://imgur.com/a/gTtrl
Background, about 25 hens and 1 rooster live in a 150 ft coop (with outside time). They have a giant 5 gallon waterer and 5 gallon feeder.
Is this a disease/infestation problem?
Is this just what hens look like and is normal? (Some of them don't seem to have this problem, but others do).
Is this because my rooster is being too aggressive/big? (He's a Cochin, but the hens aren't--they're a mix of Rocks, Top Hats, EEs, and some other random stuff). (The rooster has all of his feathers).
I haven't seen any bleeding, only the missing feathers on their back (above the tail).
Anyway, any advice would be much appreciated. Thank you!
Photos without link:





Background, about 25 hens and 1 rooster live in a 150 ft coop (with outside time). They have a giant 5 gallon waterer and 5 gallon feeder.
Is this a disease/infestation problem?
Is this just what hens look like and is normal? (Some of them don't seem to have this problem, but others do).
Is this because my rooster is being too aggressive/big? (He's a Cochin, but the hens aren't--they're a mix of Rocks, Top Hats, EEs, and some other random stuff). (The rooster has all of his feathers).
I haven't seen any bleeding, only the missing feathers on their back (above the tail).
Anyway, any advice would be much appreciated. Thank you!
Photos without link: