Bird about to move near (5)
I believe the answer is:
crane
'bird' is the definition.
(crane is a kind of bird)
'about to move near' is the wordplay.
'about' becomes 'c' (abbreviation for 'circa').
'to move' indicates an anagram (I've seen 'moving' mean this).
'near' is an anagram of 'rane'.
'c'+'rane'='CRANE'
(Other definitions for crane that I've seen before include "Large long-legged bird" , "Stretch out (one's neck)" , "American writer" , "Wading bird - lifting device" , "Wading bird - lifting apparatus" .)