Bird language none accepted as mimicry (9)
I believe the answer is:
emulation
'mimicry' is the definition.
(I've seen this before)
'bird language none accepted' is the wordplay.
'bird' becomes 'emu' (emu is a type of bird).
'language' becomes 'latin' (Latin is an example).
'none' becomes 'o'.
'accepted' means one lot of letters goes inside another.
'latin' placed around 'o' is 'lation'.
'emu'+'lation'='EMULATION'
'as' acts as a link.
(Other definitions for emulation that I've seen before include "Imitation" , "attempting to become equal" , "Imitative rivalry" , "Act of attempting to match or surpass" , "mimicry" .)