Razorbill illustration
Birdsong field guide

Razorbill

Alca torda

The Razorbill is a medium-sized colonial auk and the closest living relative of the extinct Great Auk, distinguished by its deep, laterally compressed bill with white transverse lines.

What it sounds like

Generally silent at sea; at breeding sites, they emit low, guttural vibrating growls and rhythmic croaks.

Reference call, compare with what you heard
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Rec. Scott Olmstead · United StatesCC BY-NC-SAXeno-canto

Field notes

  • It is the only extant member of the genus Alca.
  • Chicks depart from their cliff-side nests at only 15-20 days old, jumping into the sea before they are able to fly.
  • Pairs are primarily monogamous and engage in elaborate mutual preening and bill-touching to maintain pair bonds.
  • They use their wings to 'fly' underwater, reaching depths of up to 120 meters while hunting forage fish.
  • Razorbills are long-lived birds, with some individuals reaching over 30 years of age.
Habitat
Rocky coastal cliffs for breeding; open marine waters and continental shelf edges during the winter.
Range
Subarctic and boreal waters of the North Atlantic, ranging from eastern North America to Western Europe.
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