Due to a lapse in appropriations, the majority of USGS websites may not be up to date and may not reflect current conditions. Websites displaying real-time data, such as Earthquake and Water and information needed for public health and safety will be updated with limited support. Additionally, USGS will not be able to respond to inquiries until appropriations are enacted.  For more information, please see www.doi.gov/shutdown

Patuxent Wildlife Research Center


Patuxent Wildlife Research Center (PWRC) produces innovative science to support natural resource management and meet our nation’s most pressing conservation challenges.
PWRC research topics include bird population dynamics, ecotoxicology, and the development of quantitative & decision analysis tools. We conduct several national programs, including the Bird Banding Lab and the Breeding Bird Survey.

Research Spotlight

Research Spotlight

USGS Patuxent scientists are providing managers with tools for improving detection and for proactively mitigating the impacts of amphibian diseases.

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Publication Spotlight

Publication Spotlight

If you enjoy finding tadpoles in ponds, you already know frogs are sensitive to water conditions in some way. This new study explores that sensitivity, asking how amphibians across North America are responding to altered climatic conditions.

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Date published: December 6, 2018

STEP-UP Program Wins Award

The USGS was awarded the 2018 Workforce Development Partner of the Year by the Foundation for Fairfax County (VA) Public Schools (FCPS) at a luncheon attended by over 250 elected officials and local leaders, including Director Jim Reilly.  The USGS is the first federal entity to receive this award. 

Date published: November 30, 2018

The Bird Banding Lab wraps up banding for fall migration

Highlight of birds banded at the BBL during fall 2018 migration.  

Date published: November 15, 2018

Employee Spotlight: Jennifer Malpass, Ph.D., AWB, DCA

Jenn Malpass, Biologist at the Bird Banding Lab Travels the Eastern US to Present Updates to Partners.


Year Published: 2019

Use of blood clotting assays to assess potential anticoagulant rodenticide exposure and effects in free-ranging birds of prey

Non-target wildlife, particularly birds of prey, are widely exposed to and acutely poisoned by anticoagulant rodenticides (ARs). An unresolved issue surrounding such exposure, however, is the potential for sublethal effects. In particular, the consequences of AR exposure and resulting coagulopathy on health and survival of...

Hindmarch, Sofi; Rattner, Barnett A.; Elliott, John E.

Year Published: 2019

Coastal wetlands: A synthesis

This book and this synthesis address the pressing need for better management of coastal wetlands worldwide because these wetlands are disappearing at an alarming rate; in some countries the loss is 70%–80% in the last 50 years. Managing requires understanding. Although our understanding of the functioning of coastal...

Perillo, Gerardo M. E.; Wolanski, Eric; Cahoon, Donald R.; Hopkinson, Charles S.; Hopkinson, Charles S.; Wolanski, Eric; Cahoon, Donald R.; Perillo, Gerardo M. E.; Brinson, Mark M.

Year Published: 2019

Evaluating restored tidal freshwater wetlands

As restoration of tidal freshwater wetlands has progressed in North America and Eurasia, research findings have continued to emerge on the postrestoration success of these ecosystems. The most common approaches used to restore tidal freshwater wetlands involve excavation or placement of dredged sediment to restore tidal ...

Perillo, Gerardo M. E.; Wolanski, Eric; Cahoon, Donald R.; Hopkinson, Charles S.; Baldwin, Andrew H.; Hammerschlag, Richard S.; Cahoon, Donald R.