Heron cousin (4)
I believe the answer is:
ibis
'heron cousin' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ibis that I've seen before include "Hotel group" , "seaside feeder?" , "Bird with long neck and legs and a curved bill" , "Wading bird of tropical waters" , "One has large bill" .)