Name bird seen in central part of regatta venue (7)
I believe the answer is:
entitle
'name bird' is the definition.
'entitle' can be an answer for 'name' (entitle can mean to give a name or title). I'm not sure about the 'bird' bit.
'in central part of regatta venue' is the wordplay.
'in' becomes 'trendy' ('in' can mean trendy or fashionable).
'central' means to look at the middle letters.
'part of regatta venue' becomes 'title' (I can't explain this - if you can you should believe this answer much more).
The centre of 'trendy' is 'en'.
'en'+'title'='ENTITLE'
'seen' is the link.
Can you help me to learn more?
(Other definitions for entitle that I've seen before include "Give a right (to someone to do something)" , "Give one the right - name" , "Name; enable" , "term" , "Warrant" .)