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All corvid species are particularly intelligent and very adaptable birds with a gift for voices. They belong to the Passeriformes, i.e. songbirds. The corvids are strong and robust in their entire body structure. In autumn and winter they often gather in large flocks. During the day they search for food together. When evening and darkness fall, they descend into their nightly communal sleeping places with loud calls and lots of screaming. Seven corvid species are shown in the video.