Birdlike fieldsman? (5)
I believe the answer is:
gully
'birdlike fieldsman?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
This is the entire clue.
Can you help me to learn more?
(Other definitions for gully that I've seen before include "Rainwater channel" , "Water-worn ravine - fielding position" , "Water-course" , "Deep ditch" , "Narrow channel - fieldsman" .)