Little girl keeping a sort of porcelain bird (8)
I believe the answer is:
flamingo
'bird' is the definition.
(flamingo is a kind of bird)
'little girl keeping a sort of porcelain' is the wordplay.
'little girl' becomes 'Flo' (short for Florence).
'keeping' means one lot of letters goes inside another (some letters kept inside).
'sort of porcelain' becomes 'ming' (ming china).
'a'+'ming'='aming'
'flo' enclosing 'aming' is 'FLAMINGO'.
(Other definitions for flamingo that I've seen before include "colourful bird" , "Pink wading-bird" , "Exotic bird" , "Pink wader" , "Pretty bird" .)