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Streamflow and Endangered Species Habitat in the Lower Isleta Reach of the Middle Rio Grande

San Acacia Dam is located in a reach of the Rio Grande that has been designated as critical habitat for two endangered species, the Rio Grande silvery minnow (Hybognathus amarus) and the southwestern willow flycatcher (Empidonax traillii extimus). Presently, Rio Grande upstream from the dam is used to convey irrigation water to the Socorro main More...

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Impacts of Introduced Avian Diseases on the Decline and Extinction of Native Hawaiian Honeycreepers

How is avian pox and malaria impacting native Hawaiian honeycreepers? USGS scientists in Hawaii conduct surveys, develop new diagnostic tools, and test management strategies to understand the impacts of these introduced vector borne diseases on native Hawaiian wildlife.

  • Anianianu from the Alakai Wilderness Preserve, Kauai. Photo credit: USGS

Potential Environmental Contaminant Risks to Avian Species at Important Bird Areas in the Northeastern United States

From the abstract: Environmental contaminants can have profound effects on birds, acting from the molecular through population levels of biological organization. An analysis of potential contaminant threats was undertaken at 52 Important Bird Areas (IBAs) within the northeastern Atlantic coast drainage. Using geographic information system More...

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Hawaiian Native Birds Research

Introduction to Hawaiian studies of native birds: Hawaiian forest birds, endangered Palila (Loxioides baillieu), endangered Nene (Branta sandvicensis), birds elsewhere in the Pacific, waterbirds and seabirds, and endangered Laysan ducks (Anas laysanensis).

  • Male Laysan Duck. Photo by Evan Jorgenson, USFWS volunteer

Southwestern Willow Flycatcher Site

The Southwestern Willow Flycatcher (Empidonax traillii extimus) is a small passerine bird placed on the federal Endangered Species list in 1995. The purpose of this web site is to provide a centralized location where the viewer can find out what the flycatcher looks and sounds like, and learn about the status, distribution, biology and habitats of More...

  • Image of Southwestern Willow Flycatcher (Empidonax traillii extimus) sitting in someone's hand