Slowly, they go back to their basic instincts - taking dust baths, building nests, all the things they'd never done before.
(all the things; 'd never done; T:before) (they; go; back to their basic instincts - taking dust baths) Context(they go,List([8, 15))):(they; go building; nests)
they go,List([8, 15))
all the things they they
'd never done go go building
T:before
back to their basic instincts - taking dust baths
nests