Answer:

nesters

Answer	Crossword Clue
NESTERS	Birds, when building homes
NESTERS	Family types
NESTERS	Birds, at times

NESTERS	They make things cozy
NESTERS	Birds, e.g.
NESTERS	Avian home makers
NESTERS	Fledglings
NESTERS	Empty ... (many seniors)
NESTERS	Homesteaders.
NESTERS	Home builders.
NESTERS	Illegal squatters.

NESTERS	Squatters: Western U.S.
NESTERS	Homesteaders; squatters.
NESTERS	Young birds.
NESTERS	Birds in the spring.
NESTERS	Squatters in cattle country.
NESTERS	Setting hens.
NESTERS	Squatters in the West.
NESTERS	Birds.

NESTERS	Squatters.
NESTERS	Western squatters.
NESTERS	Squatters
NESTERS	Birds, generally
NESTERS	Homesteaders
NESTERS	Ranchers' foes
NESTERS	Birds or settlers
NESTERS	The feathered set

NESTERS	Home makers
NESTERS	Birds
NESTERS	Empty ...
NESTERS	Cranes constructing homes, e.g.
NESTERS	Homemakers out on a limb?
NESTERS	Tree house makers?
NESTERS	Twig-toting birds
NESTERS	Parents of absent children (with "empty")

NESTERS	What many seniors are (with "empty")
NESTERS	With "empty," parents of grown children
NESTERS	Birds or wasps