One of the easier warblers to identify by sight, the top of the male Blackcap's head is a sooty black, though as with yesterday's bird (Blackbird), the top of the female's is a chestnut brown. They have a distinctive song, too, and this was how I first spotted the one I saw this morning near Wharfebank Mill. It is attractive enough to have earned it the nickname "the northern Nightingale". As with the Chiffchaff, increasing numbers of what was once only a summer visitor now over-winter here.
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