Murderous hens

[Newtopoulrty]

Please help!!! Within the last week my hens are rampaging against each other, I saved the one girl and quarantined her bc I caught the others pecking her viciously, then today, I found one of my girls dead in the nesting box from being pecked, her entire rear was bloody and gaping with wounds, i don't understand what is going on. I know they bully sometimes and I figured they were bullying the younger one (that I saved) bc she was younger. The one I found dead was one of my original hens that have been around the longest. But to be clear she wasn't old she was hatched in March. What should I do? I'm afraid this is going to continue and all my hens are going to die.

 

[BDutch]

Do you know who is the atacker? Take her away from the flock too asap. .

 

[BDutch]

How many hens do you have? Is there a rooster? How old are they all?
How big is youre coop and run?

 

[Aapomp831]

Are they crowded? Is it possible the one they picked in the vent had a prolapse?

 

[Eggcessive]

Make sure that it was the chickens who killed the hen. Then look at your coop to see if you have enough room, that they are getting enough protein in a balanced chicken feed, that they are getting out to free range so they are not bored. Here is a good article about pecking and cannibalism:
https://poultry.extension.org/artic...ibalism-in-small-and-backyard-poultry-flocks/

 

[Misfits Farm 92]

What breed are the hens?