pulling out feathers

So I got some White Pekin Ducklings recently all are fine but one it has this weird bump on his rear and he pull all of his down off of it! Does anyone know what this is?? Please help im concerned ab the little guy.

I have 4 ducks in my coop, one male and three females that are about 4 months old, and have been together since their hatching. I recently introduced them to 15 of my Road Island Hens and one Road Island rooster. I have two coops, one for the chickens, one for the ducks where I keep them at...

So me and my father own a few breeds of hens, we own plymouths, orpingtons (i believe), some ameraucanas ,and some Wyandottes. in the beginning when our first batch of ameraucanas got old enough, their back feathers were pulled out and eventually, we lost all of them to death from what i believe...

Hi everyone, I have a 9-1/2 week old Blue Cochin who is one of five mixed-breed pullets that I picked up as day olds. They were integrated into the hen house/yard about 3 weeks ago where four other 16 month old (mixed breeds) hens live. Today when we returned home from work, Baby Blue was...