About 330 species of birds have been recorded in Iceland. Of these only about 85 nest or have attempted to nest, and about 12 are common passage migrants or winter visitors. The rest are accidentals and casual visitors. The last category consists mainly of passerine birds of European origin, the most common of which are chiffchaffs, willow warblers, blackcaps, garden warblers, chaffinches, bramblings, redstarts and robins. Quite a few of the accidental visitors come from America, such as parula warblers, America robins, hermit thrushes, indigo buntings etc.