Bird getting a letter from Al (5)
I believe the answer is:
capon
'bird' is the definition.
(capon is a kind of bird)
'getting a letter from al' is the wordplay.
'getting' means one lot of letters go next to another.
'letter' becomes 'c'.
'from' is a charade indicator (letters next to each other).
'al' becomes 'pon' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'a' after 'c' is 'ca'.
'ca'+'pon'='CAPON'
Can you help me to learn more?
(Other definitions for capon that I've seen before include "poultry?" , "Castrated cock fattened for eating" , "Emasculated fowl" , "Castrated bird" , "Castrated fowl, for eating" .)