Threatened and Endangered Species

Chinook Salmon and Pacific Lamprey are culturally significant fishes to the Tribal community along the Siletz River, Oregon. The USGS studied how streamflow and bedload conditions may influence mainstem spawning habitats.

USGS researchers are combatting avian malaria by improving the trapping and tracking of mosquitoes in endangered Hawaiian bird habitats.

Abundance data are collected for bird populations throughout the Pacific Islands by numerous federal, state, university, and non-profit organizations. In order to ensure data are standardized and available to researchers throughout the region, interagency bird databases have been created and continue to be used. These databases contain more than a million compiled, proofed, and standardized...

Population counts of Mariana swiftlets is critical to understand if control of brown tree snakes in Guam have aided swiftlet recovery. USGS scientists and The University of Hawai’i at Hilo are testing videographic methods to count Mariana swiftlet population size and observe their nesting and roosting behavior.

Introduced rats are notorious predators of birds and their nests worldwide, but especially on remote islands. Rats ( Rattus exulans) first arrived in Hawai‘i with Polynesian colonists about 1,000 years ago, resulting in deleterious consequences for native birds and ecosystems. Since Western contact in 1778, two additional rat species have become established in Hawai‘i, including the highly...

The Conservation Efforts Database (CED) is a secure online data repository that collects, stores, and retrieves spatially explicit, spatially obscure, and non-spatial information on species and habitat conservation and management actions. The CED is designed to allow data collection from all interested partners including federal, state, local, non-government organizations, universities, private...

This web-based mapping tool, released in 2024, enables users to identify which threats are driving the current status of Sagebrush Ecological Integrity (SEI), assess if SEI and associated threats, such as invasive annual grass, conifer encroachment, human modification - have changed over time, and visualize spatial trends in SEI and threats. The Sagebrush Ecosystem Trends Module supports managers...

The CED Gunnison Sage-grouse Recovery Module was released in 2020 and is designed to capture any effort designed to benefit Gunnison sage-grouse recovery. This includes habitat restoration and any activities that contribute to the recovery of Gunnison sage-grouse, a federally listed threatened species. While similar to the Sagebrush Module, The Gunnison Sage-Grouse Recovery module contains fields...

The CED Cutthroat Module, released in 2024, is our latest module and is designed to capture any action related to the conservation, enhancement, restoration, or recovery of native, inland cutthroat trout or the habitats and waters that they depend on. The first iteration of this module was designed specifically for the Lahontan cutthroat trout. However, we are currently working on expanding the...

The CED Sagebrush Module, first released in 2014, captures any conservation effort, enhancement, restoration, plan, or action related to the sagebrush landscape or activities that benefit sagebrush-dependent species. The CED was originally focused only on greater sage-grouse and thus, most of the records currently in our database are related to this species, but, starting in 2019, we expanded our...

Using thermal cameras, we are determining the population size and cave occupancy of the Mariana swiftlet and Pacific sheath-tailed bat. Both species face extirpation from the Northern Mariana Islands and are listed as endangered. Understanding the species' population status can assist in planning recovery efforts for both species.

The Herpetological Research Team is using acoustic surveys and eDNA methods to evaluate the progress of invasive bullfrog removal and Oregon spotted frog recovery.