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Rissa brevirostris

Rissa brevirostris (*)

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Ordo: Charadriiformes
Subordo: Lari

Familia: Laridae
Subfamilia: Larinae
Genus: Rissa
Species: Rissa brevirostris

Rissa brevirostris (Bruch, 1853)

Journal für Ornithologie 1: 103.
IUCN: Rissa brevirostris (Vulnerable)

Vernacular names
العربية: نورس أحمر الساق
brezhoneg: Karaveg pavioù ruz
català: Gavineta beccurta
čeština: Racek krátkozobý
Cymraeg: Gwylan goesgoch
Deutsch: Klippenmöwe
English: Red-legged Kittiwake
Esperanto: Ruĝkrura mevo
español: Gaviota piquicorta
فارسی: کاکایی صخره‌نشین پاقرمز
suomi: Punajalkakajava
français: Mouette des brumes
galego: Garrucho de patas vermellas
עברית: ריסה אדומת-רגל
italiano: Gabbiano tridattilo zamperosse
日本語: アカアシミツユビカモメ
кыргызча: Кызыл бут бабыр
Nederlands: Roodpootdrieteenmeeuw
norsk: Rødfotkrykkje
Diné bizaad: Tónteel tsídii bijáád łichíʼígíí
polski: Mewa krótkodzioba
русский: Красноногая моевка
svenska: Beringmås
українська: Мартин червононогий

The red-legged kittiwake (Rissa brevirostris) is a seabird species in the gull family Laridae. It breeds in the Pribilof Islands, Bogoslof Island and Buldir Island in the Bering Sea off the coast of Alaska, and the Commander Islands, Russia and spends the winter at sea.

Red-legged kittiwake parent and chick.

The red-legged kittiwake is a very localised subarctic Pacific species. Apart from the distinguishing feature implicit in its name, it is very similar to its better known relative, the black-legged kittiwake; other differences include the shorter bill, larger eyes, a larger, rounder head and darker grey wings, and in the juveniles, which barely differ from the adults, lacking the black tail band and 'W' across the wings of juvenile black-legged kittiwakes. Juveniles take three years to reach maturity. Adults are 35–39 cm (14–15 in) long, with an 84–92 cm (33–36 in) wingspan and a body mass of 325–510 g (11.5–18.0 oz).[2]

Like the Pacific race of black-legged kittiwake, the red-legged kittiwake has a well-developed hind toe. As occasional individual black-legged kittiwakes have reddish legs, any reports of red-legged away from the subarctic Pacific must record all of the other differences, not just the leg colour, for acceptance by bird recording authorities.

The red-legged kittiwake feeds on fish such as lanternfish (Myctophidae), squid and invertebrates. It spends the summer at the cliff breeding colonies, nesting on ledges, and migrates out to sea in September to overwinter in the north western Pacific Ocean and the Gulf of Alaska.[3]

This species is listed as "Vulnerable" by the IUCN as its population appears to be in decline. It has a global population in the region of 337,000 to 377,000 mature individuals and its breeding range is 192,000 square kilometres (74,000 sq mi). Its numbers are thought to have decreased by about 35% between the mid-1970s and the mid-1990s though numbers may have stabilized since. It is unclear why they have declined, but it may be related to a change in the availability of prey, possibly associated excessive commercial fishing or with climate change.[3]


BirdLife International (2018). "Rissa brevirostris". IUCN Red List of Threatened Species. 2018: e.T22694502A132557429. doi:10.2305/IUCN.UK.2018-2.RLTS.T22694502A132557429.en. Retrieved 12 November 2021.
CRC Handbook of Avian Body Masses by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0-8493-4258-5.

"Species factsheet: Rissa brevirostris". Birdlife International. Retrieved 13 December 2013.

Harrison, Peter (1988). Seabirds: An Identification Guide. London: Christopher Helm. ISBN 0-7470-1410-8
Malling Olsen, Klaus and Hans Larsson, Gulls of Europe, Asia and North America ISBN 0-7136-7087-8

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