Answer:

coop

Answer	Crossword Clue
COOP	Roosting place
COOP	Where a rooster roosts
COOP	College house with volunteer labor

COOP	Structure with layers
COOP	Hen pen
COOP	Harvard Square store
COOP	Harvard Square fixture
COOP	Shopping club
COOP	Harvard Sq. site
COOP	Chicken quarters
COOP	Fowl territory

COOP	Urban-housing corporation
COOP	Henhouse
COOP	Condo cousin
COOP	Confine, with "up"
COOP	Multilayer farm site?
COOP	Place to pick up chicks
COOP	Place to brood
COOP	Chicken's home

COOP	Fowl house
COOP	Slammer
COOP	Enclosure for chickens
COOP	Hen housing
COOP	Hen's housing
COOP	Abode with multiple layers?
COOP	Pigeons' house
COOP	Building with many layers?

COOP	Condo alternative
COOP	Jointly-owned business
COOP	Group enterprise
COOP	Fowl home
COOP	Poultry pen
COOP	Squawk box?
COOP	Quarters for layers
COOP	Residence, of a sort

COOP	Fowl enclosure
COOP	Chickens' home
COOP	Condo's cousin
COOP	Where to find chicks
COOP	Chicken cage