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Craveri’s Murrelet
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Charadriiformes
Family: Alcidae
Genus: Synthliboramphus
Species: S. The conservation status of a Species is an indicator of the likelihood of that species remaining extant either in the present day or the near future A vulnerable species is a Species which is likely to become endangered unless the circumstances threatening its survival and reproduction improve Chordates ( Phylum Chordata) are a group of Animals that includes the Vertebrates together with several closely related Invertebrates Birds ( class Aves) are bipedal endothermic ( Warm-blooded) Vertebrate animals that lay eggs. Charadriiformes is a diverse order of small to medium-large Birds It includes about 350 Species and has members in all parts of the world This article is about a family of birds For the American ornithological journal see The Auk. Synthliboramphus is a small genus of Seabirds in the Auk family from the North Pacific. craveri
Binomial name
Synthliboramphus craveri
(Salvadori, 1865)

Craveri’s Murrelet (Synthliboramphus craveri) is a small seabird which breeds on offshore islands in both the Pacific Ocean and the Gulf of California off the Baja peninsula of Mexico. Year 1865 ( MDCCCLXV) was a Common year starting on Sunday (link will display the full calendar of the Gregorian calendar (or a Common year Seabirds are Birds that have adapted to life within the marine environment The Pacific Ocean is the largest of the Earth 's Oceanic divisions " Sea of Cortez " redirects here For the book by John Steinbeck, see The Log from the Sea of Cortez. The Baja California peninsula ( English: Lower California peninsula) is a Peninsula in western Mexico. The United Mexican States ( or commonly Mexico (ˈmɛksɪkoʊ () is a federal constitutional Republic in North America. It also wanders fairly regularly as far as central California in the USA, primarily during post-breeding dispersal. California ( is a US state on the West Coast of the United States, along the Pacific Ocean. It is threatened by predators introduced to its breeding colonies by oil spills, and tanker traffic. An introduced species (also known as naturalized species or exotic species) is an Organism that is not indigenous to a given location but A seabird colony is a site which Seabirds visit to breed typically during the summer Increasing tourism development and commercial fishing fleets also further threaten the species. With an estimated population of 6,000-10,000 breeding pairs, its population is listed as vulnerable.

Contents

Description and range

The Craveri’s Murrelet is a small black and white auk with a small head and thin sharp bill. It resembles the closely related Xantus's Murrelet, with which it shares the distinction of being the most southerly living of all the auk species. Xantus's Murrelet ( Synthliboramphus hypoleucus) is a small Seabird found in the California Current system in the Pacific Ocean The Craveri’s Murrelet has a partial neck collar (Xantus’s has none), and dusky underwings (Xantus’s has white underwings). Craver’s black face mask dips a bit further down the face compared to the Xantus’s. Both species can be also separated by voice.

Behaviour

Craveri's Murrelet feeds far out at sea on larval fish such as herring, rockfish, and lanternfish. Herring are small Oily fish of the genus Clupea found in the shallow temperate waters of the North Atlantic, the Baltic Sea, the North Sebastidae is a family of marine fish in the order Scorpaeniformes. Lanternfishes (or myctophids, from the Greek mykter, "nose" and ophis, "serpent" are small Deep sea fish of Like all auks it is a wing-propelled diver, chasing down prey under the water with powerful wingbeats. It flies well, and can take off without taxiing. Flight is the main mode of locomotion used by most of the world's bird species

The Craveri's Murrelet nests in small crevices, caves and under dense bushes on arid islands in loose scattered colonies. It returns to the colony only at night, laying two eggs which are incubated for about a month. Like other murrelets of the genus Synthliboramphus (like the Ancient Murrelet) the chicks are highly precocial, leaving the nest within two days of hatching and running actively towards the sea, where the parents call to them. A genus (plural genera from Γένος Latin genus "descent family type gender" is a low-level Taxonomic The Ancient Murrelet, Synthliboramphus antiquus, is a Bird in the Auk family In Biology, the term precocial refers to species in which the young are relatively mature and mobile from the moment of birth or hatching Once at sea the family swims to offshore waters. Little is known about the time at sea due to difficulties in studying them.

Threats

Craveri's Murrelet is considered by some to be one of the more endangered species of auk. It is threatened by offshore oil drilling and tanker traffic. Increased tourist developments and birds getting caught in nets from commercial fishing operations also pose a danger. It is also threatened by introduced species such as mice, rats and feral cats; this threat has been lessened lately by efforts to restore its habitat by removing introduced predators. A mouse (plural mice) is a small Animal that belongs to one Rats are various medium sized long-tailed Rodents of the superfamily Muroidea A feral cat (or stray cat, alley cat) is a Cat which has been separated from Domestication through abandonment loss or running away and becomes The ecological restoration of islands, or island restoration, is the application of the principles of Ecological restoration to Islands and island groups

References

External links

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