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Highlight IDTitleStrategic Program Area(s)YearStation
Photo of European Starlings are one of the world’s most successful invasive species. Known to compete with native bird species for nest sites, they may also compete with ground-foraging insectivores and other grassland species.
ID: 796
Impacts of European Starlings on Native Species: Looking Beyond Competition for Nest Sites

European starlings are a remarkably successful invasive species known to compete with native bird species for nest cavities. Starlings avoid ung ...

Principal Investigator : Kathryn L. Purcell

Invasive Species2015PSW
Photo of A western pond turtle at the San Joaquin Experimental Range in California. USDA Forest Service
ID: 794
Response of Western Pond Turtles to Drought

Western pond turtles (Actinemys marmorata) are declining throughout most of their range. The population studied at the San Joaquin Experimental ...

Principal Investigator : Kathryn L. Purcell

Invasive Species
Wildlife and Fish
2015PSW
Photo of Following a sharp decline in abundance related to West Nile Virus, western scrub-jays in California are showing recovery. Gary Woods.
ID: 1117
Songbird Population Trends Have Their Ups and Downs

Population trends and information on whether species are increasing or decreasing are crucial to managing and conserving species. Using 27 years ...

Principal Investigator : Kathryn L. Purcell

Wildlife and Fish2016PSW