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J. Roeland ( www.xeno-canto.org )
The Blackcap is a small, somewhat pale-grey bird, with a beautiful song. The song lasts a shorter while than a Garden Warbler's, but is very much alike. The male has a black crown, the female has a brown crown.
http://nl.wikipedia.org/wiki/Sylvia_atricapilla
http://eol.org/pages/1052362/maps