Bird in Belgium, pale-coloured, needs feeding (5,4)
I believe the answer is:
black swan
'bird' is the definition.
(black swan is a kind of bird)
'belgium pale-coloured needs feeding' is the wordplay.
'belgium' becomes 'B' (abbreviation for Belgium).
'pale-coloured' becomes 'wan' (wan means pale or ashen).
'needs' becomes 'lacks' (lack is a kind of need).
'feeding' is an insertion indicator (one word is fed by another set of letters).
'b'+'wan'='bwan'
'bwan' placed around 'lacks' is 'BLACK SWAN'.
'in' is the link.
(Other definitions for black swan that I've seen before include "Aquatic bird" , "Australian winger" , "Australian native bird" , "Aussie swimmer" .)