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Space Use And Nesting Ecology Of Common Ravens (Corvus Corax) In Central Washignton State, Brandon A. Rossi
Space Use And Nesting Ecology Of Common Ravens (Corvus Corax) In Central Washignton State, Brandon A. Rossi
Master of Biology Theses
The ecology and space use of Common ravens (Corvus corax; hereafter ravens) is not well understood in the shrub-steppe of central Washington State. Raven populations have increased by more than 254% since 1990 in Washington State (North American Breeding Bird Survey; www.mbr-pwrc.usgs.gov/bbs/). Ravens in central Washington are implicated as top predators of a small endemic population of greater sage-grouse (Centrocercus urophasianus). Researchers have related increased raven populations to anthropogenic subsidies such as landfills, agriculture, and livestock operations. Analyzing movement can help researchers understand the characteristics of habitat that are important and potentially drive population fluctuations. We found that daily and …