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Ecological Factors Determining Nesting Habitat For American Avocets, Landon R. Jones
Ecological Factors Determining Nesting Habitat For American Avocets, Landon R. Jones
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The American Avocet (Recurvirostra americana) is a large shorebird that breeds and congregates in open, shallow, saline wetlands (Robinson et al. 1997). Its long, curved bill is well adapted for stirring up and feeding on invertebrates from the benthos. Because they fill such a narrow habitat niche, the majority of avocets concentrate in the thousands to breed in a few hot spots such as Mono Lake in California, and the Great Salt Lake in Utah (Robinson et al. 1997). Avocets arrive at the Great Salt Lake in late March and nest from mid-April to mid-July (Sordahl 1981). They require 15-20 …
Northern Goshawk Nest Activity As An Indicator Of Habitat Quality On Three National Forests In Southern Utah, K. S. Marvel, R. L. Rodriguez, Landon R. Jones
Northern Goshawk Nest Activity As An Indicator Of Habitat Quality On Three National Forests In Southern Utah, K. S. Marvel, R. L. Rodriguez, Landon R. Jones
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The Northern Goshawk (Accipiter gentilis) has been a species of concern in the western United States since it was thought to be in decline in the 1970s. Loss of critical breeding and wintering habitat has contributed, in part, to this decline. In the U.S., the goshawk was listed in 1991 as a sensitive species for the Intermountain Region of the Forest Service. This region includes all National Forests in Utah. The goshawk also holds the status of a Management Indicator Species (MIS) on all six National Forests in Utah (USDA Forest Service 1999). The aim of the Forest Service was …