sometimes the don't have the orgin to produce eggs and they will never lay eggs there called hay-waisters because they use up all of they food and don't return u with something...im guessing that u got hens that were in the same brood and were born like that
sometimes the hens get blood clots and that's how it gets out...its real gross or its there getting older and less able to produce and it hearts for them
she would protect her chicks with the cost of a lot of feathers gone also nobody would be near her because they make a sould of very"dont come near me or ull get it" type of sound
My chickens bob there heads,cock there heads,make funyy noises, fuss over everything, and sqawk out of the blue when there left alone and away from me and the other hens...there cute fuzzy and hatched to a destiny to be mine :) there the cutest things comment if u love ur hens and roosters too!!!
I think if u show like if u have them in a topless pen if u have ur scent on it and ur chickens it will leave them alone because they r scared of ur and were saying this is our territory...my hen got attacted yesterday by a hawk or eagle and I screamed to make sure it new I was a bigger pretitor...