Answer: hootowl

AnswerCrossword Clue
HOOTOWL

Nocturnal bird

HOOTOWL

One might wake you up if your window is open

HOOTOWL

Barn bird

HOOTOWL
Fly-by-nighter?
HOOTOWL
Big-eyed barn bird
HOOTOWLBarn dweller, maybe
HOOTOWLSoft-winged night flier.
HOOTOWLBird of prey.
HOOTOWLNoisy bird
HOOTOWLNocturnal noisemaker
HOOTOWLIt may arouse a sleeping camper
HOOTOWLLoud bird is overly upset, breaking into prolonged cry (4,3)
HOOTOWLSage noisemaker