murre


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murre

(mör), common name for a group of diving birds of the same family as the aukauk
, common name for a member of the family Alcidae (alcid family), swimming and diving birds of the N Atlantic and Pacific, which includes the guillemots and puffins. Their legs are set far back on their bodies, making them clumsy on land, where they seldom venture except to
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 and the puffinpuffin,
common name for a diving bird of the family Alcidae (auk family). Its large, triangular bill, brilliantly colored in yellow, blue, and vermilion, is adapted to carrying several fish at one time; it also gives the puffin its alternate name of sea parrot.
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 (family Alcidae) and including the guillemots. There are three species of murres, all about 18 in. (45 cm) long, brownish black above and white below. The common murre, Uria aalge, and the Brunnich's murre are found in the North Atlantic; the California murre is found in the Pacific. Murres are among the largest of the living members of the family. The smaller guillemots are also called sea pigeons. Murres eat small fish and crustaceans and lay their hard-shelled, pear-shaped eggs on bare rock. Murres return to the same breeding sites year after year. Both male and female incubate the single egg laid per season. Murres are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Aves, order Charadriiformes, family Alcidae.
References in periodicals archive ?
Common and Thick-billed Murres are the most common seabird species wintering in the area (Erikstad et al.
A federal biologist who studies the murres told Ross, "I have mixed emotions.
Only chicks that survived [greater than]14 d were included in the analyses (N = 33 experimental and 57 control chicks in 1994; N = 27 experimental and 56 control chicks in 1995), because 15 d is the youngest age at which Thick-billed Murre chicks are known to depart the nest of their own volition (Gaston and Nettleship 1981).
In contrast, effective population sizes of murre colonies appear to be on the order of 10,000 (see Appendix), and most colonies occur in areas that were glaciated during the Pleistocene, so are probably less than 10,000 years or 1000 generations old.
Male-male forced copulation, for example, has been well documented in several monogamous Arctic birds, including Common Murres (Uria aalge) (Birkhead et al., 1985) and Ivory Gulls (Mallory et al., 2008; Kylin, 2011), and it has been correlated with increased extra-pair copulations in dominant males in at least one species, the Razorbill (Alca torda) (Wagner, 1992, 1996).
Additionally, they are one of the 2 most important prey for Common Murres (Uria aalge) and Rhinoceros Auklets (Cerorhinca monocerata; Lance and Thompson 2005), and can comprise up to 67% of the diet of Marbled Murrelets (Brachyramphus marmoratus) in regional populations (Norris and others 2007).
The common murre, in other words, may not be as quick to celebrate the eagles' comeback.
Mass at 14 d of age declined significantly with hatching date in 6 of 13 observational Thick-billed Murre samples (Table 1).
A spectacular example is the 1996 return of the common murre, an auk cousin of the puffin, to Devil's Slide rock, a 900-feet-high coastal sea stack south of San Francisco.
It has cascades like a dam burst and swept through the mountains and valleys of KPK, hit the adjoining areas of Potohar(Islamabad, Murre, Pindi, Jehlum-Chakwal) and meandered through the Salt Range through Central and Western Punjab, all the way to South Punjab, with its tide entering the City of Lights.
Power functions were used to describe the delay of reinforcement gradients in this paper because of their flexibility and because when exponential or other such gradients with large variability in parameters (across animals, or conditions) are averaged, power functions are the asymptotic form (Murre & Chessa, 2011).
Dhahran The Camp Courtesy of Murre And The Pacific/FlickR