Take food into cosy place: most tidy (7)
I believe the answer is:
neatest
'most tidy' is the definition.
('neat' can be a synonym of 'tidy')
'take food into cosy place' is the wordplay.
'take food' becomes 'eat' (to eat is to have some food).
'into' is an insertion indicator.
'cosy place' becomes 'nest' (cosy place for a bird).
'eat' inserted inside 'nest' is 'NEATEST'.
(Other definitions for neatest that I've seen before include "Most smart" , "Seat ten (anag)" , "best-looking desk, say?" , "Most tidy" , "Most orderly" .)