The general appearance is remarkably like that of the Yellow-legged Gull, including the size and colour of its bill and legs. One distinctive feature is that the feathers on the back and wings are dark grey, so that when perched the difference with the wingtips is not noticeable (in the case of the yellow-legged gull, the wingtips stand out against the greyish white flanks of the body). A closer look reveals that the bill is less robust than that of the Yellow-legged Gull’s and it has a slightly slenderer appearance.
Species 1
Lesser Black-backed Gull
Scientific name
Larus fuscus
Family 2
Laridae
Taxonomic Affinity Group 3
Gulls and Terns
Phenology 4
It can be seen all year round on the Iberian Peninsula, in our wetlands and on the coast, although the wintering populations are the most abundant. The species’ behaviour is similar, except that during May and June it is not present and in July it is very scarce.
The graph represents the probability of seeing a species during the year, grouped into months. The vertical axis indicates the percentage value. Each of the bars expresses its value. The horizontal axis represents the months: I = January, II = February, III = March, IV = April, V = May, VI = June, VII = July, VIII = August, IX = September, X = October, XI = November and XII = December.
Observation recommendations
It is a bird that is extremely easy to watch, it flocks and appears in relatively large numbers in the observation areas.
Observation areas where we can find it
Notes
[1] The names used are from the list of birds of Spain, drawn up by SEO/BirdLife and updated to 2019 (https://seo.org/listaavesdeespana/). The reference is: Rouco, M., Copete, J. L., De Juana, E., Gil-Velasco, M., Lorenzo, J. A., Martín, M., Milá, B., Molina, B. & Santos, D. M. 2019. Checklist of the birds of Spain. 2019 edition. SEO/BirdLife. Madrid.
[2] The taxonomic family to which it belongs is indicated.
[3] Traditionally, waterbirds have been grouped according to their taxonomy or “taxonomic affinity”, i.e., when some birds coincide in certain features that allow them to be classified scientifically, but without leaving the rigour of science, they are put together in these groups so that they can be easily recognised. These groups are the following: Greves (belonging to the Podicipedae family), Herons and Similar (includes the families: Ardeidae -Herons- Ciconiidae -Storks- and Threskiornithidae -Ibises and spoonbills-), Ducks (the whole Anatidae family), Coots and Similar (the family Rallidae corresponding to Rails, Gallinules and Coots), Cranes (also with only one family, the Gruidae), Waders , a heterogeneous group, the most diverse of this classification, includes the families Burhinidae (Stone-curlews), Haematopodidae (Oystercather), Recurvirostridade (Avocets and Stilts), Glareolidae (Pranticole), Charadriidadea (Plovers), Scolapacidae and finally Gulls and Similar (the recently unified family Laridae, i.e. Gulls and Terns).
[4] Phenology studies the relationship between the cycles of living beings and meteorological factors, and in our latitude these factors manifest themselves as variations throughout the year, thus relating the seasons to the birds’ cycles (breeding, migratory journeys, etc.) The graph shows the probability of seeing a bird depending on the month. It uses data from 48 bird censuses carried out between October 2016 and September 2018. The method used is that of a census route with sampling stations, with a total count on the sheet of water.