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

Dynamic N-mixture models with temporal variability in detection probability

In theory parameters of dynamic N-mixture models can be estimated with multiple years of data without the robust design under the assumption of constant detection probability. However, such an assumption can rarely be met in long-term studies, and the consequences of violating this assumption in the inferences of dynamic N-mixture models have not...

Zhao, Qing; Royle, J. Andrew

Year Published: 2019

Occupancy models for citizen-science data

Large‐scale citizen‐science projects, such as atlases of species distribution, are an important source of data for macroecological research, for understanding the effects of climate change and other drivers on biodiversity, and for more applied conservation tasks, such as early‐warning systems for biodiversity loss.However, citizen‐science data...

Altwegg, Res; Nichols, James D.

Year Published: 2019

Description of disparate responses of two indoor feral bee colonies

As is sometimes the case, field research does not always go according to plan. This is especially true when the research involves free-ranging animals. We recently conducted a preliminary field study that involved placing a beehive in a tent and individually releasing marked honey bees (Apis mellifera) outdoors to study their ability to locate...

Vyas, Nimish B.; Plunkett, Amanda D.