The Threatened & Endangered Species (T&E) Program at the Center for Urban Ecology (CUE) supports conservation efforts for threatened and endangered species of the National Capital Region (NCR). The T&E Program protects five federally listed species along with State-listed species through research, reintroduction, species monitoring, and invasive plant management.

The Region's rare species are listed as threatened (bald eagle and small whorled pogonia), and as endangered (harperella, Hay's Spring amphipod, and shortnose sturgeon, Indiana bat). Historic endangered species for the Region include the dwarf wedge mussel.

The T&E Program assists parks with compliance under Section 7 of the Endangered Species Act and cooperates with the US Fish and Wildlife, Region 5, and NOAA Fisheries, who are the lead biologists for the recovery of NCR's listed species.

Conservation strategies are necessary to sustain healthy populations and recover listed species within the parks. Parks provide annual information on the status of NCR's listed species and the amount spent on monitoring and recovery efforts.