Tricky, describing wading bird? (6)
I believe the answer is:
knotty
'tricky' is the definition.
(thesaurus)
'describing wading bird?' is the wordplay.
I cannot really see how this works, but
'bird?' could be 'knot' (knot is a kind of bird) and 'knot' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for knotty that I've seen before include "Full of tangles; extremely intricate" , "Describing a difficult problem" , "Difficult (point)" , "Difficult (like wood hard to chop through?)" , "Extremely difficult" .)