Willow Warbler Vs Chiffchaff 

The difference between the Willow Warbler and the Chiffchaff is always a quandary for many of us.
Visually they are almost identical but the difference is in the detail. Chiffchaff sport darker legs, shorter wings and are usually stumpier and less yellow than the Willow.
Their song is completely different. Chiffchaff sound like the bird. Willow Warbler have a descending series of notes. You'll hear that in my film.
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