Crossword Genius

Largest of the wild geese native to the UK (7)

Ross

I believe the answer is:

greylag

(Other definitions for greylag that I've seen before include "Large goose" , "Wild goose -- eg gyral (anag)" , "Eurasian goose" , "Common wild goose" , "Breed of goose - Lyra egg (anag)" .)

I've seen this clue in The Mirror.
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