They are distinguished from Royal Terns by the coral red and dusky tip of their bill, their larger size and the longer persistence of their black cap during breeding season. It is the world’s largest tern with a length of 48-60 cm, a wingspan of 127-145 cm and a weight of 530-782 g. Adult birds have black legs … Vol. The Caspian tern is the largest of all species of terns. Bell, M.; Bell, B.D. (Date: December 29, 2010) It’s hard to miss their large orange bill, but you’re not likely to see one in most of New England except during migration. The upper wings and back are pale grey; the underwings are pale with dark primary feathers. Size: Length 48–55 cm, wingspan 125–140 cm, weight 570–780 g. With its 1 metre wingspan, it is similar in size to a black-backed gull. The magnificent Caspian Tern Hydroprogne caspia is the world’s largest tern species, with an adult wingspan of about 5 feet.These birds are widely distributed throughout the world, though on Abaco and in the Bahamas generally they are classed as a very uncommon transient species, classified as T4 signifying a mere handful of reports. The Caspian tern is the largest of the terns, with a wingspan averaging 31 inches (79 cm). European and Asian birds spend the non-breeding season in the Old World tropics. Only a blow in to Lord Howe. Caspian ternThe Caspian tern is the largest species of tern in North America. Caspian Tern is the world’s largest tern with a size of 48–60 cm (19–24 in), a wingspan of 127–145 cm (50–57 in) and a weight of 530–782 g (18.7–27.6 oz). Caspian terns breed mainly on open coastal shellbanks and sandspits, and occasionally on braided river beds and at inland lakes. The legs and feet may be dull orange or black. The scientific name of the Caspian Tern was recently (2005) changed from the genus Sterna to Hydroprogne based on mtDNA sequence analysis. [3], In 2016, a nest of the Caspian tern was found in the Cape Krusenstern National Monument in northwestern Alaska, 1,000 miles further north than any previous sighting. Handbook of Australian, New Zealand and Antarctic birds. Its black cap, large red bill, and tern-like habit of flying slowly with … Caspian terns are sometimes mistaken for large gulls by inexperienced observers. [3] In winter, the black cap is still present (unlike many other terns), but with some white streaking on the forehead. At a distance, when they are in flight, they may be mistaken for a ring-billed Gull because of their size. Fledging occurs after 35–45 days. Caspian Terns (Hydroprogne caspia) are North America’s largest tern with a wingspan of 50 inches and weighing in at 1.4 pounds.The image above shows an adult going into nonbreeding plumage coming in for a landing at Fort De Soto’s north beach during the month of … Voice: a distinctive harsh 'karh' is often given in flight, particularly around breeding colonies. Wingspan: 4.2-4.6 ft (127.0-140.0 cm) Weight: 1.3-1.7 lb (574-782 g) Clutch Size: 2-3: Chicks at birth: Semi-precocial: IUCN Conservation Status: Least Concern: Continents: NA, SA, EU, AF, AS, OC: Videos/Pictures (feet) The Caspian Tern is the largest Tern in the world. New Zealand Birds Online. In the breeding season adults have a red bill with a black tip, a black crown, and red legs. 1 minute read. Lake Ngaroto and Lake Whakamaru on the Waikato River). Adult birds have black legs, and a long thick red-orange bill with a small black tip. Like other shore-nesting birds, chicks and eggs are vulnerable to predation by introduced mammalian predators such as cats, stoats and ferrets. It is white with a light gray mantle and white undersides. Grownup Caspian Tern has black legs and an extended thick red-orange invoice with a small black tip. Latin Name : Sterna caspia Iranian Name : پرستوی دریائی خزر Its bill is distinctively thick, bright orange but dark at the tip. They continue to be fed by the adults for several more months and may accompany them to wintering sites, where their plaintive begging cries can be heard from hundreds of metres away. ; Robertson H.A. Facebook Twitter Skype WhatsApp Share via Email. CASPIAN TERNS: A RARE TREAT FOR ABACO. The Caspian Tern, Hydroprogne caspia, stands out for any number of reason. Family: Terns – Sternidae; Appearance: Finland’s largest tern. The Caspian tern is the largest of all species of terns. Average life span of Great Lakes Caspian Terns is estimated to be 12 years. They are led from the nest a few days after hatching and fledge at about 5 weeks. Its stout, bright red bill has a gray tip and a it has a slightly forked tail. They nest either together in colonies, or singly in mixed colonies of other tern and gull species. Where they are, and when. Lake Taupo and Rotorua) and Waikato (e.g. caspian-tern. [3] The genus name is from Ancient Greek hudros, "water", and Latin progne, "swallow". Profile by Will McDaniel: The Caspian Tern is the world’s largest tern at up to 2 feet in length and topping out at an impressive 5 foot wingspan, slightly larger than … Birds is more orange-red and their upperparts are paler than on the wings, the and. Huntington Beach to predation caspian tern wingspan introduced mammalian predators such as cats, stoats and ferrets the North a... Overall, the primaries are dark grey to blackish on the Waikato River ) late December chicks... 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