Bird cooler entertaining large company (6)
I believe the answer is:
falcon
'bird' is the definition.
(falcon is a kind of bird)
'cooler entertaining large company' is the wordplay.
'cooler' becomes 'fan' (I've seen this in another clue).
'entertaining' indicates putting letters inside.
'large' becomes 'L' (eg in clothes sizes).
'company' becomes 'co' (abbreviation).
'l'+'co'='lco'
'fan' going around 'lco' is 'FALCON'.
(Other definitions for falcon that I've seen before include "A hunting bird, may be peregine" , "Hunting bird, may be trained" , "high-flyer" , "Hunting bird like peregrine or merlin" , "Kind of hunting bird - peregrine is one" .)