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Title: 2005 Columbia Basin Racer Inventory

Authors: Jakob Dulisse

Year: 2006

Report Abstract
This report summarises the results of the 2005 survey for the blue-listed racer (Coluber constrictor mormon) in the Pend d’Oreille valley and several other locations near Trail and Creston. This project resulted in a total of 24 new racer observations at 19 locations. In the Pend d’Oreille valley, the racer range was extended approximately 2.84 km eastward from Charbonneau Creek to a site just west of Tillicum Creek, which now represents the easternmost record for the species in British Columbia. Racer populations were also discovered near Montrose and Warfield, an 11.2 km range extension northwest from nearest confirmed location at Beaver Creek Provincial Park. All racer sightings were located in dry, open grassland and mixed shrub habitat and several probable hibernacula were located.

Including racer observations, we recorded a total of 281 reptile and amphibian individuals belonging to six species (five reptiles and one amphibian) in the Columbia Basin Fish and Wildlife Compensation Program (CBFWCP) area. Two of these species (the racer and western skink) are provincially blue-listed by the Conservation Data Centre (CDC), and two (the western skink and rubber boa) are federally listed as Special Concern by the Committee On the Status of Wildlife In Canada (COSEWIC). The co-occurrence of western skinks, rubber boas and racers in the same habitat presents an opportunity to simultaneously study and address the habitat and conservation needs of three reptiles at risk.

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2005 Columbia Basin Racer Inventory

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