Coyotes thrive in Seattle

Coyote density is 9 times higher in Seattle than in Washington's wildlands, according to a study published in Environmental Research: Ecology. The study analyzed coyote scats collected throughout Seattle and from wild study areas near Winthrop and Chewelah in Washington, identifying 213 coyotes from 842 scats.

The researchers, led by Laura Prugh, a UW professor of environmental and forest sciences, found that human population density had a negative effect on coyote density in Seattle. This suggests that while coyotes are thriving in the city, they may be more likely to be found in areas with lower human population density.

The study's findings are not unique to Seattle, as urban coyote density is a growing trend in many major metropolitan areas in North America. For example, Chicago is home to an estimated 4,000 coyotes, and in Los Angeles, urban coyote density is at least seven times higher than in wild areas.

## What it means The high coyote density in Seattle and other urban areas has significant implications for both humans and wildlife. As coyotes become more comfortable living in close proximity to humans, there is a greater risk of conflicts between the two species. On the other hand, the presence of coyotes in urban areas can also have benefits, such as controlling pest populations.

The study's results were published on September 10 in Environmental Research: Ecology, and provide valuable insights into the factors that influence coyote density in urban areas. By analyzing data on pollution levels, tree cover, buildings and roads, human population density, and income level, the researchers were able to identify the key factors that contribute to the high coyote density in Seattle.

## Why it matters The growing presence of coyotes in urban areas is a trend that is likely to continue, and it is essential to understand the factors that contribute to this phenomenon. By studying coyote density and behavior in urban areas, researchers can provide valuable insights into how to manage conflicts between humans and coyotes, and how to promote coexistence between the two species. As cities continue to expand and urbanize, it is crucial to consider the impact on wildlife and to develop strategies for mitigating conflicts and promoting biodiversity.