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least bittern range

Least Bittern. POWERED BY MERLIN. Select from premium Least Bittern of the highest quality. Where least bitterns do breed, however, they can occur in densities as high as 15 nests per hectare (Poole et al. Canadian range of Least Bittern according to information assembled by the Canadian Least Bittern Recovery Team, 2007. It hunts by standing still or clinging to emergent vegetation and then quickly stabbing its prey. The Least Bittern (Ixobrychus exilis), North America’s smallest heron, breeds in freshwater and brackish marshes with dense, tall persistent emerging plants, interspersed with open water and occasionally clumps of vegetation. Lowlands ecoregions inhabited by plant and animal species at risk such as the Least Bittern, wood turtle, and pickerel frog. Global range of Least Bittern.....6 Figure 2. Using climate data as its principal modeling tool, the analysis predicted a loss of 69% of the bittern’s current summer range by 2080. According to the What Bird resource, the total number of the Least bittern population is around 130,000 individuals. In North America, this species is primarily restricted to the eastern U.S., ranging from the Great Plains states eastward to the Atlantic Coast and north to the Great Lakes region and the New England states (Evers 1994). [2] It can measure from 28 to 36 cm (11 to 14 in) in length, and the wingspan ranges from 41 to 46 cm (16 to 18 in). Range: The least bittern is found from northwestern North America and southern Ontario to New Brunswick, extending south through the tropics. Alan F. Poole, Peter E. Lowther, James P. Gibbs, F. A. Reid, and Scott M. Melvin Version: 1.0 — Published March 4, 2020 Text last updated May 6, 2009 The Least Bittern usually inhabits freshwater marshes in central and south Florida where it nests in low vegetation above the water or at the water's edge. The least bittern is one of the smallest herons in the world, with perhaps only the dwarf bittern and the black-backed bittern averaging smaller in length. This species has disappeared from much of its former range, especially in southwestern Ontario, where wetland loss has been most severe. It has white stripes on its sides and yellow-gold patches on its wings that are visible when it is in flight. This bird has an extremely large range. Least Bittern Mayfield nest success rates were 43.8% (n = 38) in 1999 and 52.5% (n = 35) in 2000, and they renested and had double broods. The nest, which is constructed by both adults out of dead and live plant stems, is a platform with a shallow hollow. In Tennessee, a pair of Least Bitterns was found nesting in a marsh of only 1 acre in size. It has a dark brown or black crown and back, an orange-brown neck and sides, a white chin, and an orange and white striped throat and breast. The Least bittern is amongst the smallest of the herons, tailored for dwelling in dense marshes. 2015; National Audubon Society 2016). These bitterns occur irregularly within the mapped range in Siskiyou, Modoc, and Lassen counties. Least bittern trends are difficult to assess because the secretive nature of the birds make them difficult to detect without targeted surveys. Breeding has recently been confirmed in central, south central, and southeastern Arizona, as well as southern Nevada. 2009). Small numbers also breed occasionally in northwest Ontario. Geographic range: Ixobrychus exilis exilis: S Canada to Central America and West Indies; Ixobrychus exilis erythromelas: E Panama to the Guianas, se Brazil and Paraguay; Ixobrychus exilis pullus: NW Mexico; Ixobrychus exilis bogotensis: Central Colombia (declining due to habitat destruction) Ixobrychus exilis peruvianus: W-central Peru; Source: Clements checklist. Sep 13, 2016 - Explore Barbara Scriver's board "least bittern" on Pinterest. 1992). Alan F. Poole, Peter E. Lowther, James P. Gibbs, F. A. Reid, and Scott M. Melvin Version: 1.0 — Published March 4, 2020 Text last updated May 6, 2009 This map depicts the range boundary, defined as the areas where the species is estimated to occur at a rate of 5% or more for at least one week within the breeding season. Mean home range of adults was 9.7 ha (n = 33), but varied (range = 1.8-35.7 ha) depending upon whether birds used one or two areas during the breeding season.

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