Nature's incubators (5)
I believe the answer is:
nests
(Other definitions for nests that I've seen before include "Lodges" , "Bird structures" , "Settles comfortably into, as birds do" , "Birds' homes" , "Bird houses" .)
I believe the answer is:
nests
(Other definitions for nests that I've seen before include "Lodges" , "Bird structures" , "Settles comfortably into, as birds do" , "Birds' homes" , "Bird houses" .)