noun / verb
roost
ROOST/ruːst/
A place where birds settle to rest, or to rest there.
The hens roost side by side on a raised wooden perch.

Etymology
Old English hrost named both a roof’s wooden framework and a pole where domestic birds rested at night. The bird-perch sense survives in today’s broader term for a bird’s resting or sleeping place.
In context
when you flush bats from a roost or they get scared or the the leaf opens up and they have to find a new roost during the day so they all fly away
More examples
- Several crows roost in the tall pine behind our house.
- A sturdy branch provides a safe roost for the sparrows.
- The hens are roosting on a wooden bar inside the coop.
Forms
roost · roosts · roosted · roosting