Bird regrettably chokes (5)
I believe the answer is:
egret
'bird' is the definition.
(egret is a kind of bird)
'regrettably chokes' is the wordplay.
'EGRET' is hidden in amongst the letters.
However, I am not sure how the hidden word is indicated.
Can you help me to learn more?
(Other definitions for egret that I've seen before include "Greet (anag) -- wading bird" , "Mainly white heron" , "One of a pair of waders" , "one with plume" , "Lesser white heron" .)