Give some of these eggs back to the birds (5)
I believe the answer is:
geese
'the birds' is the definition.
(goose is a kind of bird)
'give some of these eggs back' is the wordplay.
'give some' becomes 'gee' (I can't justify this - if you can you should believe this answer much more).
'of' indicates an anagram (the answer comes from or 'of' the letters).
'back' says to take the final letters (the letter at the back).
The last letters of 'these eggs' are 'es'.
'es' is an anagram of 'se'.
'gee'+'se'='GEESE'
'to' is the link.
Can you help me to learn more?
(Other definitions for geese that I've seen before include "Large farm birds" , "Six of these are 'a-laying' on 31 December" , "Grey-lags" , "Honking birds" , "Water birds; fools" .)