Answer:

nests

Answer	Crossword Clue
NESTS	Homes for hatchlings
NESTS	Machine-gunners' spots
NESTS	Starling structures

NESTS	Tree houses?
NESTS	Aeries
NESTS	Where 25A sit
NESTS	Hideaways
NESTS	Orioles start in them
NESTS	Lairs
NESTS	Grouses' houses
NESTS	Avian nurseries

NESTS	Aviary clutches
NESTS	Spots for clutches
NESTS	Fits like matryoshki
NESTS	Incubation sites
NESTS	Spots for layers
NESTS	Cuckoo quarters
NESTS	Places one inside another
NESTS	Settles in

NESTS	Fits one inside another
NESTS	Wasp creations
NESTS	Havens for ravens
NESTS	Cozy places
NESTS	Fits one within another
NESTS	Hornet haunts
NESTS	Heron homes
NESTS	Refuges

NESTS	Snug retreats
NESTS	Where some chicks hang out
NESTS	Bird houses
NESTS	Egg holders
NESTS	Hatchlings' homes
NESTS	Youngsters' hangouts
NESTS	Chicks' hangouts
NESTS	They may go out on a limb

NESTS	Avian abodes
NESTS	Hatchling homes
NESTS	Hornets' hangouts
NESTS	They're for the birds
NESTS	Fits neatly

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.