The Colorado Ecological Services Field Offices provide biological advice to other federal and state agencies, industry, and members of the public concerning the conservation of fish and wildlife and their habitat that may be affected by development activities. Personnel assess the potential effects of projects to migratory birds, endangered species, anadromous fish, and wildlife. In Colorado, these projects typically include activities such as implementing activities under the National Fire Plan and the Healthy Forest Restoration Act, developing Community Wildlife Protection Plans, conducting extensive investigations regarding contaminant exposure to wildlife,   mining, utility lines, and highway construction. The effects of contaminants on fish and wildlife are also assessed. Recommendations are then made regarding ways to avoid, minimize, or compensate for harmful impacts on fish and wildlife resources and their habitats. The primary areas of responsibility for the Colorado Ecological Services Field Offices include, Canada lynx and Preble's meadow jumping mouse recovery, assessment and reclamation of damages from mining at the California Gulch site in Leadville, Partners for Fish and Wildlife Program, and Federal projects reviews.

Ecological Services in Colorado consists of two field stations, in Lakewood and Grand Junction.  This arrangement maximizes efficiency in serving Service customers relating to the conservation of Federal trust fish and wildlife resources, including threatened and endangered  species and migratory birds.  The Lakewood ES Office primarily handles issues on the Eastern Slope, while the Grand Junction Office primarily handles West Slope issues.  The National Black-Footed Ferret Conservation Center recently moved to Colorado.  The goal of the Center is a captive breeding program to establish breeding adults in captivity while continuing to return ferrets to the wild.  For more information about black-footed ferret recovery, please visit the Service's website or the Black-Footed Ferret Recovery Implementation Team's website.