It's nothing for wild bees to be very plump (5)
I believe the answer is:
obese
'very plump' is the definition.
'obese' can be an answer for 'plump' (thesaurus). I am not certain of the 'very' bit.
'it's nothing for wild bees' is the wordplay.
'it's nothing' becomes 'o' (looks like zero - 0).
'for' says to put letters next to each other.
'wild' indicates anagramming the letters.
'bees' is an anagram of 'bese'.
'o'+'bese'='OBESE'
'to be' acts as a link.
Can you help me to learn more?
(Other definitions for obese that I've seen before include "having generous corporation" , "Grossly overweight" , "Enormously portly" , "Unusually fat" , "Falstaffian" .)