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Chiffchaff and Willow Warbler: Spot the Difference - Ireland's Wildlife
Chiffchaffs and willow warblers have been back in the country for a while now, and are singing their little heads off… which is a good thing… because the song is the most reliable way of telling these two very similar species apart. If you don’t hear them, getting a positive ID on that willow-chaff can …