Eastern gale troubled bird (5)
I believe the answer is:
eagle
'bird' is the definition.
(eagle is a kind of bird)
'eastern gale troubled' is the wordplay.
'eastern' becomes 'e'.
'troubled' indicates an anagram.
'gale' anagrammed gives 'agle'.
'e'+'agle'='EAGLE'
(Other definitions for eagle that I've seen before include "It normally takes two or three shots to shoot this" , "Avian symbol of power" , "High-flyer" , "Valuable piece" , "experts are putting more than albatross?" .)