Glee a bird disturbed (5)
I believe the answer is:
eagle
'bird disturbed' is the definition.
I can't tell whether this definition defines the answer.
'glee a' is the wordplay.
'glee a' anagrams to 'EAGLE'.
Though, I am not clear how this is indicated.
Can you help me to learn more?
(Other definitions for eagle that I've seen before include "five buck bit, or more" , "It normally takes two or three shots to shoot this" , "Large bird of prey" , "one's well below par" , "King of birds" .)