The oldest building at the Patuxent Research Center.
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Old Research Building in Patuxent
The oldest building at the Patuxent Research Center.
Bird Tracking
Different bands for birds, so the scientist can track bird locations.
Different bands for birds, so the scientist can track bird locations.
Employee Holds a Duckling
Employee holds a baby duckiling at the Patuxent Research Center.
Employee holds a baby duckiling at the Patuxent Research Center.
Duckling
Students pet the newborn duckling at the Patuxent Research Center.
Students pet the newborn duckling at the Patuxent Research Center.
Quagga Mussels Caught in Bottom Trawl
These invasive quagga mussels were caught using a trawl, or fishing net.
These invasive quagga mussels were caught using a trawl, or fishing net.
Baby Duckling
USGS employee Melanie Gade holding a baby duck at the Patuxent Research Center.
USGS employee Melanie Gade holding a baby duck at the Patuxent Research Center.
Students Play with Ducklings
Student feeding little ducklings at the Patuxent Research Center.
Student feeding little ducklings at the Patuxent Research Center.
Baby Ducklings
Baby ducklings born a week ago at the Patuxent Research Center.
Baby ducklings born a week ago at the Patuxent Research Center.
Whooping Cranes
Two whooping cranes at the Patuxent Research Center.
Two whooping cranes at the Patuxent Research Center.
Patuxent Research Center
View of Patuxent Lake.
Patuxent Research Center
Road to Patuxent on a hot summer day.
Road to Patuxent on a hot summer day.
Baby Ducklings
Two baby ducklings swimming together at the Patuxent Research Center.
Two baby ducklings swimming together at the Patuxent Research Center.
Installing a water-quality micro-sampler under high water conditions
Installing a water-quality micro-sampler under high water conditionsUSGS Hydrologist Heather Krempa collects a stream sample at Little Fabious River, near Monticello, Missouri, for the Regional Stream Quality Assessments.
Installing a water-quality micro-sampler under high water conditions
Installing a water-quality micro-sampler under high water conditionsUSGS Hydrologist Heather Krempa collects a stream sample at Little Fabious River, near Monticello, Missouri, for the Regional Stream Quality Assessments.
A hydrologist maneuvers an isokinetic sampler into position
A hydrologist maneuvers an isokinetic sampler into positionUSGS Hydrologist Dan Button maneuvers an isokinetic sampler into position prior to lowering it into Massies Creek, in Wilberforce, Ohio.
A hydrologist maneuvers an isokinetic sampler into position
A hydrologist maneuvers an isokinetic sampler into positionUSGS Hydrologist Dan Button maneuvers an isokinetic sampler into position prior to lowering it into Massies Creek, in Wilberforce, Ohio.
Water-quality sampling in Cuyahoga Valley National Park, 2013
Water-quality sampling in Cuyahoga Valley National Park, 2013Water-quality sampling in Cuyahoga Valley National Park, 2013. Photograph by Amie Brady, U.S. Geological Survey
Water-quality sampling in Cuyahoga Valley National Park, 2013
Water-quality sampling in Cuyahoga Valley National Park, 2013Water-quality sampling in Cuyahoga Valley National Park, 2013. Photograph by Amie Brady, U.S. Geological Survey
Brewer's Sparrow Chicks
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Four Brewer's Sparrow Chicks
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.