Nationally, the U.S. Fish and Wildlife Service is the principal federal agency responsible for administering the Endangered Species Act (ESA). The Colorado Ecological Services Field Office implements those ESA responsibilities for Colorado. Using the best available science, our Ecological Services personnel work with federal, state, Tribal, local, and non-profit stakeholders, as well as private landowners, to avoid, minimize, and mitigate threats to vulnerable species and habitat. We also conduct oil spill and other environmental contaminant assessment and response activities, promote invasive species invasive species
An invasive species is any plant or animal that has spread or been introduced into a new area where they are, or could, cause harm to the environment, economy, or human, animal, or plant health. Their unwelcome presence can destroy ecosystems and cost millions of dollars.

Learn more about invasive species management and habitat restoration actions, and coordinate with other federal agencies to ensure fish and wildlife impacts are considered during the planning and construction of projects.

The Eastern Colorado Field office, located in Lakewood, serves the Front Range and eastern Colorado. The Western Colorado Field Office, located in Grand Junction, serves the West Slope and western Colorado. Please see the map below for each office’s jurisdiction. While each office serves a different geographic area, the field offices work together for conservation of vulnerable species and habitat across the state.