Catch a very quiet bird in red (9)
I believe the answer is:
apprehend
'catch' is the definition.
(I've seen this before)
'a very quiet bird in red' is the wordplay.
'very quiet' becomes 'pp' (musical abbreviation for pianissimo).
'bird' becomes 'hen' (hen is a kind of bird).
'in' is an insertion indicator.
'hen' inserted into 'red' is 'rehend'.
'a'+'pp'+'rehend'='APPREHEND'
(Other definitions for apprehend that I've seen before include "Be terribly afraid" , "Detain" , "Recognise - arrest - suspect" , "bust" , "nick" .)