- 16.9 in
- 24.8–26.8 in
- 17.8–31.4 oz
- Petit pingouin (French)
- Alca común (Spanish)
- The oldest known Razorbill was at least 41 years old It was banded as a nestling on Bardsey Island in the United Kingdom in 1968, and was resighted while breeding in 2009.
Schooling fish, crustaceans, and other invertebrates.
- Egg Description
- Whitish with dark blotches around large end.
Shallow bowl of pebbles, vegetation, feathers, bones, and shells. Placed in open spaces between boulders, in cracks in rocks, caves, or on narrow cliff ledges. Nests in colonies.
Dives underwater to capture prey, using its wings to swim.
Razorbill populations are currently thought to be stable or increasing throughout major parts of the species' global range. The North American Waterbird Conservation Plan estimates a continental breeding population of 76,000 birds, rates the species a 14 out of 20 on the Continental Concern Score, and lists it as a Species of Moderate Concern. Razorbill is not on the 2014 State of the Birds Watch List. Exploitation by people for food greatly reduced Razorbill populations until the early 20th century. With protection, the species increased.
- Hipfner, J. M., and G. Chapdelaine. 2002. Razorbill (Alca torda). In The Birds of North America, No. 635 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.
- Lavers, Jennifer, Mark Hipfner, Gilles Chapdelaine and J. Mark Hipfner. 2009. Razorbill (Alca torda). In The Birds of North America No. 635 (A. Poole, Ed.). The Birds of North America Online, Ithaca, New York.
- Kushlan, J.A., et al. 2002. Waterbird conservation for the Americas: the North American Waterbird Conservation Plan, version 1. Waterbird Conservation for the Americas. Washington, DC.
- North American Bird Conservation Initiative, U.S. Committee. 2014. State of the Birds 2014 Report. U.S. Department of Interior, Washington, DC.