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Grey Wagtail

灰鶺鴒 · 灰鹡鸰 · 灰鶺鴒 · Bergeronnette des ruisseaux · Lavandera cascadeña

Motacilla cinerea

Don't let the name fool you — this wagtail has a bright lemon-yellow belly and a very long tail that it bobs constantly by mountain streams!