Norfolk status Common immigrant. Breeds every summer, but winter survival rare. Several generations, most frequest May - Sept. Can turn up in thousands under the right conditions, especially at coastal migration watch-points. Recent research shows the Silver-Y flies at altitudes of up to 1.2km when migrating!
Recorded in 70 (101%) of 69 10k Squares. First Recorded in 1834. Last Recorded in 2020. Additional Stats
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