Alcidae


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Alcidae

[′al·sə‚dē]
(vertebrate zoology)
A family of shorebirds, predominantly of northern coasts, in the order Charadriiformes, including auks, puffins, murres, and guillemots.

Alcidae

 

a family of birds of the order Charadriiformes. There are 13 genera, comprising 20 or 22 extant species. The most common genera are Uria, Alca, Aethia, Alle, Brachyramphus, Lunda, Fratercula, and Cepphus. One species, the great auk (Pinguinnus impennis), became extinct in the mid-19th century. Alcids are typical seabirds, going ashore only to mate and lay eggs. The birds are common along the seas of the moderate and cold latitudes of the northern hemisphere. They are excellent swimmers and divers; they propel themselves underwater with their wings. Alcids feed only on marine organisms—small fish and various invertebrates, including crustaceans and mollusks. The birds usually nest in colonies along seashores; many species, along with gulls, constitute the main residents of bird rookeries. The eggs are usually laid in crevices of cliffs or among rocks. Murres (Uria) breed on open rocky ledges, and Atlantic puffins (Fratercula) and tufted puffins (Lunda) burrow in loose soil. A clutch contains one or two large eggs, weighing more than 10 percent of the female’s weight. Both parents incubate the eggs (24 to 35 days) and feed the young. The young are born sighted and covered with dense down. In some parts of the world alcids are commercially valued for their down, feathers, meat, and eggs.

REFERENCES

Ptitsy Sovetskogo Soiuza, vol. 2. Edited by G. P. Dement’ev and N. A. Gladkov. Moscow, 1951.
Kaftanovskii, Iu. M. Chistikovye ptitsy Vostochnoi Atlantiki. Moscow, 1951.
Kozlova, E. V. Rzhankoobraznye. Podotriad chistikovye. Moscow-Leningrad, 1957. (Fauna SSSR. Ptitsy, vol. 2, fasc. 3.)
Zhizn’ zhivotnykh, vol. 5. Moscow, 1970.
Ivanov, A. I. Katalog ptits SSSR. Leningrad, 1976.

N. N. KARTASHEV

References in periodicals archive ?
Adaptive significance of post-hatching development patterns and growth rates in the Alcidae. Ornis Scandinavica 4:113-121.
Sequence variation in the guillemot (Alcidae: Cepphus) mitochondrial control region and its nuclear homolog.
The results of our study provide little support for Ydenberg's model of timing of nest departure in the Alcidae when applied to two intermediate species, the Thick-billed Murre and Razorbill.
"Technology side we have our latest software and hardware integrations to demonstrate, particularly focusing on the connectability side of the devices," says David Liang, the business development manager of Alcidae. "Attendants will be able to experience firsthand how fast the devices set up and connect to our system and understand how the technology operates."
Development of the young in the Atlantic Alcidae. In: Nettleship DN, Birkhead TR, editors.
The auks: Alcidae. Oxford, UK: Oxford University Press.
Frame (1973) described seabirds (Laridae and Alcidae) during an oceanographic cruise in late summer, but did not provide density estimates.
Annual adult survival of Least Auklets (Aves, Alcidae) varies with large-scale climatic conditions of the north Pacific Ocean.
In most polar oceans, seabirds such as auks (Alcidae) and black-legged kittiwakes (Rissa tridactyla), are important components of marine ecosystems.
Horned Puffin Fratercula corniculata: This species was the last of the family Alcidae to arrive at its nesting sites on the south coast.
San Francisco, CA, March 27, 2019 --(PR.com)-- Alcidae Inc., the company that develops smart home technology with innovative design and features, has announced today that they have released the latest generation of the Garager product - the Garager 2 Smart Garage Cam and Controller.