This depends on whether you are referring to possums or opossums, which are quite distinct from one another.
True possums, marsupials of Australia (and surrounding islands) have no interest in chickens ("chooks" in the Australian vernacular) or chicken pens, beyond getting some leftover fruit that may be in there.
Opossums of North America are known to kill chickens and sometimes eat their eggs.
a chicken pen
Possum
A chicken coop.
possum
A chicken coop.
CHICKEN
Yes, Believe it or not, a Hog Pen does smell better than a Chicken House.
You CAN, but it may not be the healthiest thing for the chicken.
To prove to the possum (or armadillo in the southwest US) that it could be done.
A coop or pen or cage.
well first you have to have a chicken pen
It is known as a coop or a pen.