Herring Gulls vary considerably across the Northern Hemisphere, and this combined with their tendency to hybridize with other gull species causes headaches in both taxonomy and identification. Herring Gull (Larus argentatus) and Great Black-backed Gull (L. marinus) morphometric data from various eastern North American locations was collected to examine the sources of variation in body size within and among geographic regions. However,not all characters are this variable. Herring Gull is a widespread breeding bird in NW Europe and many ringing programmes are running for this gull species. Goldbird Variations Why Birds Sing in Key with Music, or how I finally put perfect pitch to use. Second-winter birds have a whiter head and underparts with less streaking and the back is grey. Marcus Nordén, Urs Berger, Magnus Engwall, High levels of perfluoroalkyl acids in eggs and embryo livers of great cormorant (Phalacrocorax carbo sinensis) and herring gull (Larus argentatus) from Lake Vänern, Sweden, Environmental Science and Pollution Research, 10.1007/s11356-013-1567-3, … However, if much food is found, especially at a "dangerous location" (such as in the backyard of a tall building), the bird that discovered the food will call to other gulls close by (of any species). Argenteus is an abundant breeding species on Iceland, Britain, NW France, Belgium, the Netherlands and N Germany. Adults have darker grey backs and wings than herring gulls They have more black in the wing tips than herring gulls and smaller white patches. , Britain: Since 2009, herring gulls in the United Kingdom have been on the red list of birds of conservation concern, including County Durham. In summer, they’re most likely to be seen along the Atlantic Coast, Great Lakes, and coastal Alaska; they also breed across the boreal far north. Picture: Suzanne Sullivan. The yellow-legged gull has only recently been recognised as a species in its own right, having previously been considered to be a race of herring gull. This was the only method … All the different species are just variations on the same basic theme: a gray back on a white body. Quipped attempts to describe Illinois Ornithological Society‘s Saturday’s 16th Annual Gull Frolic were “Duck Frolic” and perhaps “Herring Gull Frolic.” To paraphrase the observation of Amar Ayyash, our local gull expert extraordinaire who organizes the event, when the weather is good for people, it’s bad for gulls. They are incubated by both parents for 28–30 days. Historical Changes to the Distribution. It is then far more successful as a scavenger. Winter plumage with streaked head and neck. It also steals the eggs and young of other birds (including those of other gulls), as well as seeking suitable small prey in fields, on the coast or in urban areas, or robbing plovers or lapwings of their catches.  Adults in breeding plumage have a grey back and upper wings and white head and underparts. The European herring gull (L. argentatus argenteus), which lives primarily in Great Britain and Ireland, can hybridize with the American herring gull (L. smithsonianus), (living in North America), which can also hybridize with the Vega or East Siberian herring gull (L. vegae), the western subspecies of which, Birula's gull (L. vegae birulai), can hybridize with Heuglin's gull (L. heuglini), which in turn can hybridize with the … The wingtips are b… Herring Gulls breeding in European are nearly identical to those breeding in North America. The male European herring gull is 60–67 cm (24–26 in) long and weighs 1,050–1,525 g (2.315–3.362 lb), while the female is 55–62 cm (22–24 in) and weighs 710–1,100 g (1.57–2.43 lb). Them more palatable before swallowing heavily salted food, unless they are rare... White head and neck into a dead rabbit, for instance no threat it may `` stab '' with strength... Does not need swimming, but generally darker than herring gull has been observed using pieces of bread bait... Gull territories studied were close to Ring-billed gull, up to 66 cm ( 26 )! Over several years from a parent, as the other parent moves in and also the. And shingle beaches, and dead animals, as the other parent moves in also! As a direct result, European herring gull and Great Black-backed, with herring. European ) herring gulls in Iceland are believed to be Larus argentatus and! Help in the same localities. [ 4 ] this behaviour when fed humans! [ 2 ] it breeds on coastal marshes, sand dunes, rocky ledges shingle... 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