Many Thanks to Brian Sumner (c) for photograph and braving wind, hail, sleet and snow - all in a wonderful cause!! 100 swifts > NW per hour.
Dave.
THE VISIBLE MIGRATION / MOVEMENT OF BIRDS OVER BRADFORD (UK) AND SURROUNDING AREAS WITH SPECIAL EMPHASIS ON WEATHER AND SKY. NOW Including:
"OXENHOPE HOLISTIC SKY"!
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