The common raven (corvus corax) is one of the most intelligent birds in the world This striking black songbird has fascinated humans for centuries. Often solitary or in pairs, but can gather in small groups Typical call is a loud, guttural croak, but makes an astonishing variety of other strange noises Compare with chihuahuan raven in the southwestern u.s 英語などの一部の言語では、一般的な カラス （crow）とワタリガラス（raven）を意味する単語が全く違う。 カラスが腐肉や人の出した生ゴミを漁る不浄な鳥とされるのに比して、ワタリガラスは善的な象徴とされる傾向がある。
Of the birds classified as perching birds or 'songbirds,' the common raven is the largest, the size of a hawk Often, its deep croaking call will alert the observer to a pair of common ravens soaring high overhead.
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