Bird top man and woman located in tree (10)
I believe the answer is:
kingfisher
'bird' is the definition.
(kingfisher is a kind of bird)
'top man and woman located in tree' is the wordplay.
'top man' becomes 'king'.
'and' means one lot of letters go next to another.
'woman' becomes 'she'.
'located in' indicates putting letters inside.
'tree' becomes 'fir' (fir is a kind of tree).
'she' inserted inside 'fir' is 'fisher'.
'king'+'fisher'='KINGFISHER'
(Other definitions for kingfisher that I've seen before include "flyer" , "big-headed beaky type" , "Brightly-coloured bird" , "Colourful river bird" , "Colourful bird seen by streams and rivers" .)