"In natural science the principles of truth ought to be confirmed by observations." (Linnaeus). "Though, preferably backed up by a series of high quality digital photos and video." (KerryBirding).
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Friday 8 December 2017
Siberian Chiffchaffs, Killarney
Siberian Chiffchaff, Killarney, 8th December 2017 (D. Farrar).
One of at least two present, along with several Chiffchaffs.