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The Yellow-billed loon Geodatabase is a compilation of Yellow-billed loon observations and survey data. This database is intended to be a qualitative “first look” at where loons have been found and where surveys have been conducted. This dataset is intended for general planning and mapping purposes, it should NOT be used for deriving density estimates. The dataset is available either as an ESRI ArcGIS 10.1 file geodatabase or as a shapefile with associated tables.
The Bureau of Land Management- Arctic Field Office has a requirement for coordinating research andmonitoring projects related to the effectiveness of stipulations and surface resource impacts in theNational Petroleum Reserve - Alaska. Yellow-billed Loons are among the least common breeding birdsin the mainland United States and the U.S. breeding population is concentrated largely within theNational Petroleum Reserve – Alaska (NPR-A). Interest in developing the oil and gas reserves withinNPR-A has increased within the last 10 years, along with a need for better information with which toprotect loon populations. Fundamental to protection strategies is a good understanding of distributionand abundance.In 2007, the...
The Yellow-billed loon, the largest of the world’s five loon species, and also the rarest, has oneof the highest nesting densities in the world on the central Arctic Coastal Plain of Alaska (Earnstet al. 2005). In Alaska, this species typically breeds on the edges of relatively deep (>2 m), large(usu. >12 ha) fish-bearing lakes (http://alaska.fws.gov/). Little is known about their diet inAlaska, but they are believed to depend on several fish species, with cisco (Coregonus spp.)being the most important (J. Schmutz, pers. comm.). Although previously thought to winter offthe coast of the Pacific Northwest, new evidence suggests the North American breedingpopulation winters in East Asia from the western Kuril Islands...
This polygon feature class represent areas surveyed for yellow-billed loons (Gavia adamsii) and is one component of the Yellow-billed Loon Geodatabase. This database is intended to be a qualitative “first look” at where yellow-billed loons have been recorded and where surveys have been conducted. This spatial dataset is intended for general planning and mapping purposes rather than for deriving density estimates. The geodatabase is comprised of two feature classes (observations and survey_poly) and two tables (incidental_attributes and reference_information)
The Bureau of Land Management- Arctic Field Office has a requirement for coordinating research andmonitoring projects related to the effectiveness of stipulations and surface resource impacts in theNational Petroleum Reserve - Alaska. Yellow-billed Loons are among the least common breeding birdsin the mainland United States and the U.S. breeding population is concentrated largely within theNational Petroleum Reserve – Alaska (NPR-A). Interest in developing the oil and gas reserves withinNPR-A has increased within the last 10 years, along with a need for better information with which toprotect loon populations. Fundamental to protection strategies is a good understanding of distributionand abundance.
The Red-throated Loon is the smallest of the world’s five loon species. This species typicallybreeds in low wetlands in both tundra and forested terrain (Barr et al. 2000). They nest on pondedges, sometimes along very small ponds (<1 ha), particularly in parts of their range sympatricwith Pacific Loons (Barr et al. 2000). Red-throated Loons are unique in that they regularlyforage on fish away from their nesting ponds.In Arctic Alaska this often involves flights to theArctic Ocean (Andres 1993). Like Yellow-billed Loons, the North American breedingpopulation, north of 68° latitude, appear to winter primarily in East Asia from the western KurilIslands to the Yellow Sea (J. Schmutz et al., unpublished data). In 1993,...
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