The Common Chiffchaff is a small songbird found across Europe and Asia that is known for its distinctive two-note call, which sounds like "chiff-chaff" and gives the species its name. It matters to birdwatchers and ornithologists as an important indicator of seasonal changes, since it is often one of the first migrant birds to arrive in spring in northern regions.
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The common chiffchaff (Phylloscopus collybita), or simply the chiffchaff, is a common and widespread leaf warbler which breeds in open woodlands throughout northern and temperate Europe and the Palearctic.
It is a migratory passerine which winters in southern and western Europe, southern Asia and north Africa. Greenish-brown above and off-white below, it is named onomatopoeically for its simple chiff-chaff song. It has a number of subspecies, some of which are now treated as full species. The female builds a domed nest on or near the ground, and assumes most of the responsibility for brooding and feeding the chicks, whilst the male has little involvement in nesting, but defends his territory against rivals, and attacks potential predators.
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