Bird associated with Chekov and Brighton footballers (7)
I believe the answer is:
seagull
'bird' is the definition.
(seagull is a kind of bird)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for seagull that I've seen before include "Main creature" , "Marine bird" , "Avian scavenger" , "One sitting atop mast perhaps" , "Bird paradoxically fond of landfill sites" .)