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Yellow-legged gull

Yellow-legged gull
Yellow-legged gull in İstanbul, Türkiye
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Charadriiformes
Family: Laridae
Genus: Larus
L. michahellis
Binomial name
Larus michahellis
Naumann, 1840

Larus argentatus michahellis Naumann, 1840
Larus cachinnans michahellis Naumann, 1840
Larus cachinnans atlantis
Larus cachinnans lusitanius

The yellow-legged gull (Larus michahellis) is a large gull found in Europe, the Middle East and North Africa, which has only recently achieved wide recognition as a distinct species. It was formerly treated as a subspecies of either the Caspian gull L. cachinnans, or more broadly as a subspecies of the herring gull L. argentatus. The genus name is from Latin Larus which appears to have referred to a gull or other large seabird, and the species name honours the German zoologist Karl Michahelles.[2]


It is now generally accepted that the yellow-legged gull is a full species, but until recently there was much disagreement. For example, British Birds magazine split the yellow-legged gull from the herring gull in 1993 but included the Caspian gull in the former,[3] but the BOU in Great Britain retained the yellow-legged gull as a subspecies of the herring gull until 2007.[4] DNA research, however, suggests that the yellow-legged gull is actually closest to the great black-backed gull L. marinus and the Armenian gull L. armenicus, while the Caspian gull is closer to the herring gull and the lesser black-backed gull L. fuscus, rather than being each other's closest relatives.[5][6]

There are two subspecies of the yellow-legged gull:[6]

  • L. m. michahellis Naumann, 1840: nominate, found in western and southern Europe, northwestern Africa, and the Mediterranean.
  • L. m. atlantis (Dwight, 1922), syn. Larus fuscus atlantis, Dwight, 1922: found in Macaronesia (the Canary Islands, Madeira, the Azores). This subspecies is also sometimes known as the Atlantic gull and is potentially a full species in its own right.[7] Birds breeding on the Atlantic coasts of Morocco, Portugal and Galicia (and spreading north from there) are usually also included here, but are sometimes considered to be a third subspecies, L. m. lusitanius. Atlantic Ocean birds have darker wings and back in comparison with Mediterranean birds, creating a more pronounced contrast to the white parts.

There is also the subspecies L. m. omissus, first described in 1928 by the Russian ornithologist Theodor Pleske.


Yellow-legged gull in Porto, Portugal
Mating on roof-top, Constanta, Romania

The breeding range is centred on the Mediterranean Sea. In North Africa, it is common in Morocco, Algeria and Tunisia and increasing in places. Recent breeding has occurred in Libya and Egypt. In the Middle East, a few breed in Israel, Palestine and Syria with larger numbers in Cyprus and Turkey. In Europe, there are colonies all along the Mediterranean coast, and also on the Atlantic islands and coasts north to Brittany and west to the Azores. It also breeds on the western side of the Black Sea; here it overlaps with the Caspian gull but there is a difference in habitat, with the yellow-legged gull preferring sea cliffs and the Caspian gull flatter shores. In recent decades birds have spread north into central and western Europe. One to four pairs have attempted to breed in southern England since 1995 (sometimes hybrid pairs with lesser black-backed gulls), though colonisation has been very slow.[8]

Many birds remain in the same area all year round, but others migrate to spend the winter in mild areas of western Europe or head south as far as Senegal, Gambia and the Red Sea. There is also extensive northward post-breeding dispersal in the late summer, with numbers in southern England high from July to October.[9] It is reported as a vagrant to northeastern North America[10] and Nigeria.[citation needed]


Nominate L. m. michahellis, Elba
Head of a two-year old yellow-legged gull taken at the Breton coast
Juvenile with open beak

The yellow-legged gull is a large gull, though the size does vary, with the smallest females being scarcely larger than a common gull and the largest males being roughly the size of a great black-backed gull. They range in length from 52 to 68 cm (20 to 27 in) in total length, from 120 to 155 cm (47 to 61 in) in wingspan and from 550 to 1,600 g (1.21 to 3.53 lb) in weight.[11] Among standard measurements, the wing chord is 40.8 to 47.2 cm (16.1 to 18.6 in), the bill is 4.6 to 6 cm (1.8 to 2.4 in) and the tarsus is 5.6 to 7.5 cm (2.2 to 3.0 in).[11] Adults are externally similar to herring gulls but have yellow legs. They have a grey back, slightly darker than herring gulls but lighter than lesser black-backed gulls. They are much whiter-headed in autumn, and have more extensively black wing tips with few white spots, just as lesser black-backed. They have a red spot on the bill as adults, like the entire complex. There is a red ring around the eye like in the lesser black-backed gull but unlike in the herring gull which has a dark yellow ring.

First-year birds have a paler head, rump and underparts than those of the herring gull, more closely resembling first-year great black-backed gulls in plumage. They have a dark bill and eyes, pinkish grey legs, dark flight feathers and a well-defined black band on the tail. They become lighter in the underparts and lose the upperpart pattern subsequently. By their second winter, birds are essentially feathered like adults, save for the patterned feathers remaining on the wing coverts. However, their bill tips are black, their eyes still dark, and the legs are a light yellow flesh colour.

The call is a loud laugh which is deeper and more nasal than the call of the herring gull.

Larus michahellis juvenile in Rambla del Mar, Barcelona


Yellow-legged gull eating a Eurasian collared dove in Barcelona

Like most Larus gulls, they are omnivores and opportunistic foragers.[12] They will scavenge on rubbish tips and elsewhere, as well as seeking suitable prey in fields or on the coast, or robbing smaller gulls and other seabirds of their catches. Although urban populations are generally opportunistic scavengers, they can shift to a predatory diet if necessary; this was observed during the lockdown of Italy in 2020, when the lack of food scraps led the yellow-legged gulls of Rome to take prey as large as rats and rock doves.[13][14]

Atlantic gulls in Gibraltar have been observed and photographed picking and eating fruit from olive trees in flight.[15]


Larus michahellis atlantis - MHNT

Yellow-legged gulls usually breed in colonies. Eggs, usually three, are laid from mid March to early May and are defended vigorously by this large gull. The nest is a sometimes sparse mound of vegetation built on the ground or on cliff ledges. In some places, such as Gibraltar, Galicia and Portugal, they have started nesting on buildings, inside cities and even on trees. The eggs are incubated for 27–31 days and the young birds fledge after 35–40 days.


  1. ^ BirdLife International (2019). "Larus michahellis". IUCN Red List of Threatened Species. 2019: e.T62030970A154522526. doi:10.2305/IUCN.UK.2019-3.RLTS.T62030970A154522526.en. Retrieved 18 November 2021.
  2. ^ Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. pp. 219, 253. ISBN 978-1-4081-2501-4.
  3. ^ Sharrock, J.T.R. (1993). "Editorial". British Birds. 86 (1): 1–2.
  4. ^ Sangster, George; Collinson, J. Martin; Knox, Alan G.; Parkin, David T.; Svensson, Lars (2007). "Taxonomic recommendations for British birds: Fourth report". Ibis. 149 (4): 853–857. doi:10.1111/j.1474-919X.2007.00758.x.
  5. ^ Pons, J.-M.; Hassanin, A.; Crochet, P.-A. (2005). "Phylogenetic relationships within the Laridae (Charadriiformes: Aves) inferred from mitochondrial markers" (PDF). Molecular Phylogenetics & Evolution. 37 (3): 686–699. doi:10.1016/j.ympev.2005.05.011. PMID 16054399. Archived from the original (PDF) on 22 February 2012. Retrieved 6 November 2009.
  6. ^ a b Collinson, J. Martin; Parkin, David T.; Knox, Alan G.; Sangster, George; Svensson, Lars (2008). "Species boundaries in the Herring and Lesser Black-backed Gull complex" (PDF). British Birds. 101 (7): 340–363.
  7. ^ Callahan, David. "Seabird splits". Birdwatch Magazine. Archived from the original on 4 June 2016. Retrieved 3 July 2014.
  8. ^ Holling, M. (2009). "Rare breeding birds in the United Kingdom in 2006" (PDF). British Birds. 102: 188. Archived from the original (PDF) on 24 September 2015. Retrieved 23 August 2012.
  9. ^ Snow, D.W.; Perrins, C.M. (1998). The Birds of the Western Palearctic. Vol. 1 (Concise ed.). Oxford: Oxford University Press.
  10. ^ Field Guide to the Birds of North America. National Geographic. 2002. ISBN 0-7922-6877-6.
  11. ^ a b Olsen, Klaus Malling; Larsson, Hans (2004). Gulls: of North America, Europe, and Asia. Princeton University Press. ISBN 978-0691119977.
  12. ^ Zorrozua, Nere; Aldalur, Asier; Herrero, Alfredo; Diaz, Beñat; Delgado, Sergio; Sanpera, Carola; Jover, Lluís; Arizaga, Juan (2020). "Breeding Yellow-legged Gulls increase consumption of terrestrial prey after landfill closure". Ibis. 162 (1): 50–62. doi:10.1111/ibi.12701. ISSN 1474-919X. S2CID 91802710.
  13. ^ "Covid 19 coronavirus: Seagulls begin to hunt rats on streets of Rome". NZ Herald. 4 May 2020. ISSN 1170-0777. Retrieved 4 May 2020.
  14. ^ Squires, Nick (1 May 2020). "Seagulls in Rome take to killing rats and pigeons as lockdown deprives them of food scraps". The Telegraph. ISSN 0307-1235. Retrieved 4 May 2020.
  15. ^ van Swelm, Norman Deans. "FRUIT PICKING GIBRALTAR ATLANTIC GULLS". Radioactive Robins. Retrieved 13 October 2021.
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Yellow-legged gull
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