Dawn sees bird activity, including frantic stir (5,5)
I believe the answer is:
first light
'dawn' is the definition.
(synonyms)
'bird activity including frantic stir' is the wordplay.
'bird activity' becomes 'flight' (I can't explain this - if you can you should give a lot more credence to this answer).
'including' indicates putting letters inside.
'frantic' indicates anagramming the letters (I've seen this in other clues).
'stir' with letters rearranged gives 'irst'.
'flight' placed around 'irst' is 'FIRST LIGHT'.
'sees' is the link.
Can you help me to learn more?
(Other definitions for first light that I've seen before include "start of day" , "Glimmering" , "Instructions for enjoying cigarette" , "time for dawn chorus" , "early in the day" .)