A hen house is a thing that farmers use to help protect their laying chickens.
A hen house is a place that chickens go for refuge and rest.
In reality, a place is a thing. Everything is a thing except a person.
a coop
a thing
flock
Hens
Pullins
female turkey are call hens
Its normally referred to as a Coop.
Hen hoarder
A chick
Young hens are called 'PULLETS".
A group of hens is called a brood.
Yes, it only takes a few days for the chickens to know where they live. The rooster will call the hens home before dark if you have one, but they almost always find their way to the coop even without a rooster calling them home. When new hens are introduced to the flock they sometimes try to roost outside the coop the first night until they are used to the pecking order (who sleeps where).
I believe boiler hens are also call "fowel" (not ducks) and they are the chickens that have been allowed to reach maturity in order to fertilize eggs to produce chicks. They are called boiler hens because there meat becomes very tough with age and the only way to make the meat tender and edable is to boil it.
The plural form for the noun chicken is chickens; the plural possessive form is chickens'.