Bird scrambled after one leaving honey mixture (6)
I believe the answer is:
hybrid
'mixture' is the definition.
(I've seen this before)
'bird scrambled after one leaving honey' is the wordplay.
'scrambled' indicates an anagram.
'after' is a charade indicator (letters next to each other).
'leaving' suggests deleting specific letters.
'honey' with 'one' taken out is 'hy'.
'bird' is an anagram of 'brid'.
'brid' put after 'hy' is 'HYBRID'.
(Other definitions for hybrid that I've seen before include "Offspring of two different species or varieties" , "Mongrel - cross" , "(One) of mixed origin" , "Genetic cross" , "Like a mule" .)