Any member of the alcidae family of seabirds, including auks, puffins, guillemots, and murres, which are diving birds of northern oceans.
From the family name Alcidae, derived from the genus 'Alca' (great auk) plus the family suffix '-idae.' This follows binomial nomenclature conventions for grouping related bird species.
Alcids are proof of convergent evolution—they evolved to look and act exactly like penguins in the Northern Hemisphere while penguins evolved the same way in the Southern Hemisphere, separate but similar solutions to ocean hunting.
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