Parrots pushing third of seeds to front (4)
I believe the answer is:
apes
'parrots' is the definition.
(I've seen this in another clue)
'pushing third of seeds to front' is the wordplay.
'pushing third of' becomes 'ape' (I can't justify this - if you can you should give a lot more credence to this answer).
'to front' says to take the initial letters.
The initial letter of 'seeds' is 's'.
'ape'+'s'='APES'
Can you help me to learn more?
(Other definitions for apes that I've seen before include "Parrots" , "Imitates in every aspect" , "Copies the primates?" , "Large primates" , "Imitates like primates" .)