What does alcid mean?
An alcid is any member of Alcidae, a family of compact, black-and-white seabirds confined to the cooler waters of the Northern Hemisphere. The group includes well-known birds such as puffins, guillemots, razorbills, murres, dovekies, and the auks themselves. Alcids are superb divers: they propel themselves underwater with partly folded wings in a technique often described as 'flying' beneath the surface, pursuing fish and other small prey. Because they occupy an ecological niche similar to that of penguins, alcids are frequently cited as a textbook example of convergent evolution — the two groups evolved comparable body plans independently on opposite sides of the equator, yet unlike penguins, most alcids retain the ability to fly, albeit with labored, whirring wingbeats. The word appears chiefly in ornithology, field guides, and nature writing, where it serves as a convenient collective term for this distinctive seabird lineage.
nounA seabird of the family Alcidae, the northern-hemisphere group of diving birds that includes auks, puffins, guillemots, murres, razorbills, and dovekies.
- Any seabird of the family Alcidae, including auks, puffins, guillemots, murres, razorbills, and dovekies.
"Puffins, though unmistakable in appearance, are simply the most flamboyant of the alcids."
"The cliffs of Iceland teem with nesting alcids each summer."
"Unlike penguins, alcids can fly, using their stubby wings to 'fly' underwater in pursuit of fish."
The plural 'alcids' is the most common form in practice, since the word usually refers to members of the family collectively.
"Several alcids were spotted rafting offshore beyond the breakwater."
Penguins and alcids are a stunning case of convergent evolution — two unrelated bird families that independently evolved into nearly identical black-and-white diving machines at opposite ends of the globe.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of alcid
The word 'alcid' derives from New Latin Alcidae, the scientific family name coined for these birds, which in turn comes from Alca, the genus name for the typical auks. Alca itself was borrowed from a Scandinavian word — Danish and Norwegian 'alke' — reflecting the fact that European naturalists first formally described these birds from northern Atlantic populations. The term entered English scientific usage in the nineteenth century as ornithologists systematized bird classification.
How alcid is actually used
Primarily used in ornithological, scientific, and nature-writing contexts rather than everyday speech. 'Alcid' covers the whole family Alcidae; 'auk' is the older, more traditional term for the same group and remains more familiar to general readers.
Easily confused with alcid
Algid means cold or chilly (a medical/literary term), while alcid refers to a family of northern seabirds.