unroost
/(ˌ)ʌnˈruːst/verb
1 [with object] To dislodge from a roost or perch. Also figurative : to dislodge or force out of a place, to drive out or away.
2 [no object] To leave a roost.
Origin
Late 16th century; earliest use found in John Florio (1553–1625), author and teacher of languages. From un- + roost.