You mentioned the other hens are chasing and pecking the new Birds.....The loss of tail feathers and on their heads is sounding more like pecking to me.......Stress will stop egg production in stressed Birds.....
It could take weeks/months or never for the two groups to become one flock....They may tolerate each other but never be one flock.....
Cheers!
It could take weeks/months or never for the two groups to become one flock....They may tolerate each other but never be one flock.....
Cheers!