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Razorbill Alca torda L 41cm. Bulky seabird with distinctive bill and essentially black and white plumage. Swims well and flies on whirring wingbeats. Sexes are similar. Adult in summer has black head, neck and upperparts, and white underparts; note white wingbar. Bill is large and flattened with vertical ridges and white lines. In winter, similar but throat and cheeks are white and bill is smaller. Voice Mostly silent. Status Locally common on rocky coast seabird colonies in W and N. Nests under boulders and in crevices on cliff ledges. Pelagic outside breeding season; healthy birds seldom seen close to land. Vulnerable to oil spills.