No it is a bird
Hens are not marsupials. Marsupials are pouched mammals, and hens are members of the bird family.
About twice size of hens eggs
Hens do not menstruate in the same way that mammals do. Instead of a menstrual cycle, hens have an ovulatory cycle where they produce eggs. When an egg is not fertilized, it is laid rather than being reabsorbed or resulting in a bleeding process like menstruation. Thus, while hens do experience reproductive cycles, they do not have a menstrual period.
The plural form for the noun chicken is chickens; the plural possessive form is chickens'.
A group of hens is called a brood.
Eggs from battery hens, i.e. hens that are kept in cages (known as batteries) where several hens live together in one cage. These hens cannot roam freely as free-range hens can.
Yes hens lay eggs without roosters, It follows the same thinking as the fact that mammals ovulate even if there isn't a male present.
more hens = more eggs + more chickens (possibly more hens) = £££££
The standard collective nouns for 'hens' are:a brood of hensa clutch of hens
No hens can talk.
no but some big hens
Hens like to eat grains.