least tern range

Nests are constructed from late-May to mid-July and consist of a shallow depression on an open, sandy river bank. Threats include egg and fledgling predators, high tides and recreational use of nesting beaches. Migratory Behavior. Least Tern. [13] Predation on inland breeding terns by coyotes, bobcats, feral dogs and cats, great blue herons, Mississippi kites, and owls has also been documented. In the early 1980s, the population of the subspecies S. a. antillarum was estimated at 21,300 pairs along the east coast of the U.S., but survey methods were not comprehensive and did not include a significant rooftop-nesting Habitat in Nonbreeding Range. Mating pair at Sunset Beach, North Carolina, The mating sequence of a pair of least terns processed into one image. A real beach bum, rarely straying far from sand, both on the coast and along inland rivers and lakes. Where the surface is hard, this species may use an artificial indentation (such as a deep dried footprint) to form the nest basin. Because most of the Least Tern's decline in California seems to have resulted from disturbance … However, Least Terns in some parts of the east are now nesting successfully on gravel roofs near the coast. Late-season nesting may be renests or the result of late arrivals. Arctic Tern. Populations of this species are listed as threatened under the State of Connecticut Endangered Species Act. Leaves North America and northern Mexico entirely in winter, moving to tropical waters as far south as Brazil. [9] Insects are known to be eaten during El Niño events. 1997). Type in your search and hit Enter on desktop or hit Go on mobile device. Young birds can fly at age four weeks. Least tern management begins in May when nesting areas on beaches are fenced and signed. Incubation is by both sexes; female may do more in early stages, male more later. For the second time in three years, Mississippi’s Big Sunflower River has been recognized as one of the nation’s most endangered rivers. Gull-billed Tern. Montana, which is at the western edge of the range, has a recovery goal of 50 birds. The western population, the California least tern, was listed as an endangered species in 1972 with a population of about 600 pairs. However, Least Terns in some parts of the east are now nesting … Least Tern (Sternula antillarum) is a species of bird in the Laridae family. Nests in colonies, sometimes in isolated pairs. Least Tern: Scientific (Sternula antillarum) Order: CHARADRIIFORMES: Family (Latin) Laridae: Family (English) Gulls, Terns, Skimmers: Other name(s) Regions: NA, MA: Breeding Range Subregions: widespread: Nonbreeding Range … In the winter, its head is a mottled gray and it has a black eye stripe and a long pointed black bill. Often seen flying low over the water, with quick deep wingbeats and shrill cries. Habitat in Breeding Range. Population Status and Trend - The global population for the least tern is estimated at 65,000 – 70,000 individuals (BirdLife International 2010). After young chicks are three days old, they are brooded less frequently by parents and require wind blocks and shade, and protection from predators. Historically, the breeding range of interior least terns extended from Texas to Montana and from Colorado and New Mexico to Indiana. Adults do not require cover, so that they commonly roost and nest on the open ground. The Interior Least Tern is primarily a fish-eater, feeding in shallow waters of rivers, streams, and lakes. This species is in danger of extinction throughout all or a significant portion of its range. Nest site is on open ground (or on gravel roof). Leave nest a few days after hatching, find places to hide nearby. Other close relatives include the yellow-billed tern and Peruvian tern, both from South America. Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect this bird’s range in the future. [3][4] The California subspecies breeds on beaches and bays of the Pacific Ocean within a very limited range of southern California, in San Francisco Bay and in northwestern Mexico. Bird ID … Protecting shorebirds in habitats especially vulnerable to development and climate threats, Restoring vital coastal wetlands for colonial and beach-nesting birds. Help power unparalleled conservation work for birds across the Americas, Stay informed on important news about birds and their habitats, Receive reduced or free admission across our network of centers and sanctuaries, Access a free guide of more than 800 species of North American birds, Discover the impacts of climate change on birds and their habitats, Learn more about the birds you love through audio clips, stunning photography, and in-depth text. These 5 Threatened Places Could Be Spared Under Biden, Top Wins for Birds 2020: State Efforts to Address Climate Change. Young: Leave nest a few days after hatching, find places to hide nearby. [2] It has occurred as a vagrant to Europe, with one record in Great Britain. The wings are mostly pale gray, but with conspicuous black markings on their outermost primaries. Isolated breeding colonies can also be found throughout the Elkhorn and Loup River systems. During migration, they occasionally occur in the Lower South Platte River Basin, and less frequently on the west slope. It is migratory, wintering in Central America, the Caribbean and northern South America. The smallest tern in North America, the Least Tern averages 21 to 24 cm long and has a wingspan of 51 cm (Thompson et al. [7] In the San Francisco Bay region, breeding typically takes place on abandoned salt flats. The Least Tern is evaluated as Least Concern at this time. Range data provided by Infonatura/Natureserve and BirdPhotos.com. This is to let people give us reasons why they agree or disagree.The species' population has increased from 600 in 1973 to roughl… After formation of the new families, groupings of birds may appear at lacustrine settings in proximity to the coast. The prior rating for the Least Tern was Lower Risk. Overwhelmed and Understaffed, Our National Wildlife Refuges Need Help. Depending on habitat availability, tern nesting colonies can range from 2 to 70 pairs. Tiny, noticeably smaller than other terns, with quick flicking wingbeats. and anchovy (Anchoa spp.) Choose a temperature scenario below to see which threats will affect this species as warming increases. [10][11] In southern California, least terns feed in bays and lagoons, near shore, and more than 24 km (15 mi) from shore in the open ocean. The eastern least tern population breeds along the Atlantic coast from Maine to Florida and along the Gulf coast from Florida to Texas and probably winters in the Bahamas and Caribbean Islands. Fish, crustaceans, insects. Age at first flight about 19-20 days; young may remain with parents another 2-3 months. Least tern (S. a. antillarum) at Lake Jackson, Florida. Life Expectancy: 15 years of age. Sea beaches, bays, large rivers, salt flats. The upper parts are a fairly uniform pale gray, and the underparts white. Hundreds of secretive Clapper Rails also mysteriously found on Mississippi beaches. Diet varies with season and location; mostly small fish, crustaceans, and insects, also some small mollusks and marine worms. Changing water levels, direct disturbance by humans, and development have diminished breeding populations. 2007. Inland, we worked with diverse government partners to improve Interior Least Tern habitat and monitoring. The least tern hunts primarily in shallow estuaries and lagoons, where smaller fishes are abundant. Incubation period 20-25 days. Subspecific information 3 subspecies Sternula antillarum antillarum (e and s USA to Honduras, Caribbean, n South America) Weight: Approximately 1 ounce. It is a small tern, 22–24 cm (8.7–9.4 in) long, with a wingspan of 50 cm (20 in), and weighing 39–52 g (1.4–1.8 oz). The least tern is a small, slender tern 8-9 inches in length with a wingspan of 19-20 inches. The aptly named Least Tern—it’s really small—has been bedeviled for decades by habitat degradation. [3][4][14], 10.2305/IUCN.UK.2016-3.RLTS.T22694673A93462098.en, "Subspecific Status and Population Genetic Structure of Least Terns (Sternula antillarum) Inferred by Mitochondrial DNA Control-Region Sequences and Microsatellite DNA", California Least Tern Breeding Survey 2009 Season, 10.1675/1524-4695(2006)29[501:RSBLTI]2.0.CO;2, Tern Colony: an individual-based model of Least Tern reproduction, https://en.wikipedia.org/w/index.php?title=Least_tern&oldid=970892885, Creative Commons Attribution-ShareAlike License, An unknown subspecies was found in 2012 nesting on the Big Island of Hawaii, This page was last edited on 3 August 2020, at 00:44. Habitat: Broad, sandy, vegetation-free beaches usually located close to an estuary. In courtship, male (carrying fish in bill) flies upward, followed by female, then both glide down. Your support helps secure a future for birds at risk. Timing and Routes of Migration. The Least Tern is a priority species for ABC. Only after courtship has confirmed mate selection does nesting begin by mid-May and is usually complete by mid-June. Colloquially known as the “little striker” for its headlong dives in pursuit of fish, the Least Tern is, as its name suggests, North America’s smallest tern. Usually hovers before plunging into water for tiny prey; does more hovering than most terns. Roseate Tern. Most commonly the clutch size is two or three, but it is not rare to consist of either one or four eggs. The birds are opportunistic and tend to select any small fish within a certain size range.

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