Not going back outside. You say you see a fruit-eating bird (6)
I believe the answer is:
'a fruit-eating bird' is the definition.
(I've seen this before)
'not going back outside you say you' is the wordplay.
'going back' is a reversal indicator.
'outside' is an insertion indicator.
'you' becomes 'u' (commonly used in online communication).
'say you' becomes 'ca' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'not' reversed gives 'ton'.
'ton' going around 'uca' is 'TOUCAN'.
'see' acts as a link.
Can you help me to learn more?
(Other definitions for toucan that I've seen before include "One with huge bill" , "Bird with large, colourful bill" , "Sounds as if a pair is able for the tropical bird" , "Colourful bird, big bill" , "Bird with a large brightly-coloured bill" .)