Little bird and I got little nuts (4-6,3)
I believe the answer is:
long-tailed tit
'little bird' is the definition.
I know nothing about this answer so I can't judge whether this works.
'and i got little nuts' is the wordplay.
'nuts' indicates anagramming the letters (nuts can mean crazy).
'and'+'i'+'got'+'little'='andigotlittle'
'andigotlittle' is an anagram of 'LONG-TAILED TIT'.
Can you help me to learn more?
(Other definitions for long-tailed tit that I've seen before include "Small songbird" , "A little tin god (anag) -- small bird" .)