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1 December 2008 Distribution, Abundance, and Habitat Associations of the Night Snake (Hypsiglena torquata) in Washington State
Robert E. Weaver
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Abstract

The Night Snake (Hypsiglena torquata) is a secretive snake that is rarely encountered. Subsequently, little is known about the ecology of this species. Since it was first collected in 1943 in Washington State, few (<40) specimens have been found. From May to October 2004 and 2005, I collected 121 specimens from 8 counties in eastern Washington State by road-cruising appropriate habitat. Snakes were collected crossing roads bisecting a variety of habitats including areas of talus (such as rocky canyons), oak savannah-woodlands, sagebrush-rabbitbrush flats, pine-fir forests, grasslands, and areas of agricultural development (cropland). Snakes were most often observed in areas with an abundance of talus, followed by oak savannah-woodlands, sagebrush-rabbitbrush flats, and to a much lesser extent pine-fir forests, grasslands, and croplands. Based upon my research, H. torquata is much more common in Washington than previous work has shown.

Robert E. Weaver "Distribution, Abundance, and Habitat Associations of the Night Snake (Hypsiglena torquata) in Washington State," Northwestern Naturalist 89(3), 164-170, (1 December 2008). https://doi.org/10.1898/NWN07-30.1
Received: 10 December 2007; Accepted: 1 July 2008; Published: 1 December 2008
KEYWORDS
distribution
habitat associations
Hypsiglena torquata
Night Snake
relative abundance
Washington State
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