A weird roofless home for bird in US (5)
I believe the answer is:
aerie
'home for bird in us' is the definition.
(US spelling of eyrie )
'a weird roofless' is the wordplay.
'weird' becomes 'eerie' (I've seen this before).
'roofless' means to remove the first letter.
'eerie' with its initial letter taken away is 'erie'.
'a'+'erie'='AERIE'
(Other definitions for aerie that I've seen before include "wherein some types of bird may sit" , "inaccessible place" , "Sort of nest" , "brood" , "Visionary" .)