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Riley Mummah
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Riley Mummah is a Mendenhall postdoctoral research fellow with the Eastern Ecological Science Center of the USGS

Riley Mummah is a Mendenhall postdoctoral research fellow with the Eastern Ecological Science Center of the USGS

Staff profile picture
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Staff profile picture of Benjamin Letcher of Eastern Ecological Science Center              

Staff profile picture of Benjamin Letcher of Eastern Ecological Science Center              

Jaime D Ashander
Jaime Ashander
Jaime Ashander
Jaime Ashander

Jaime is a Research Biologist with the Eastern Ecological Science Center at the Patuxent Research Refuge in Laurel, MD.

Jaime is a Research Biologist with the Eastern Ecological Science Center at the Patuxent Research Refuge in Laurel, MD.

A bird dives underwater in a tank.
Long-tailed duck diving for underwater hearing testing.
Long-tailed duck diving for underwater hearing testing.
Long-tailed duck diving for underwater hearing testing.

Long-tailed duck diving for underwater hearing testing in an experimental chamber in which the birds’ diving behavior can be studied under various environmental conditions. 

Long-tailed duck diving for underwater hearing testing in an experimental chamber in which the birds’ diving behavior can be studied under various environmental conditions. 

a bird egg is held up to a light to see inside the egg.
Candling of grey catbird egg to determine viability
Candling of grey catbird egg to determine viability
Image depicting a duck in five different life stages (hatchling to near adulthood)
Long-tailed duck from hatch to subadult.
Long-tailed duck from hatch to subadult.
Staff profile picture
Julie Murray
Julie Murray
Julie Murray

Staff profile picture of Julie Murray the Administrative Officer for Eastern Ecological Science Center 

Staff profile picture of Julie Murray the Administrative Officer for Eastern Ecological Science Center 

Picture of a man in the field wearing a hat, chest waders and jacket
David Kazyak
David Kazyak
David Kazyak

Picture of  supervisory research fish biologist, David Kazyak in the field.

Picture of  supervisory research fish biologist, David Kazyak in the field.

A brown bird, with a red face, in a bird bander's hand
House Finch
House Finch
House Finch

The House Finch pictured was quite the surprise at the BBL's Fall Migration Station at Patuxent Research Refuge in 2023. Despite being common feeder birds in Maryland, this is only the second House Finch banded at the Migration Station since the 1990s! 

The House Finch pictured was quite the surprise at the BBL's Fall Migration Station at Patuxent Research Refuge in 2023. Despite being common feeder birds in Maryland, this is only the second House Finch banded at the Migration Station since the 1990s! 

A biologist holds a bird with its wing gently extended
Examining the Wing of a Blue-headed Vireo
Examining the Wing of a Blue-headed Vireo
Examining the Wing of a Blue-headed Vireo

A biologist gently extends the wing of a Blue-headed Vireo to look for clues on how old the bird is. During fall migration, scientists can generally determine if a bird was hatched during the current year or if the bird is older. They do this by looking at the general wear of the feathers, and if the bird has retained any of their plumage as a nestling. 

A biologist gently extends the wing of a Blue-headed Vireo to look for clues on how old the bird is. During fall migration, scientists can generally determine if a bird was hatched during the current year or if the bird is older. They do this by looking at the general wear of the feathers, and if the bird has retained any of their plumage as a nestling. 

A small brown bird, with a pink bill, is held in the hand for banding
Field Sparrow
Field Sparrow
Field Sparrow

Field Sparrows, like the one pictured, are one of 15 different sparrow species that have been banded at the BBL's Fall Migration Station. 

Field Sparrows, like the one pictured, are one of 15 different sparrow species that have been banded at the BBL's Fall Migration Station. 

David kneeling on wood plank over high grass setting up surface elevation table
David Walters measuring surface elevation table that is used to assess changes in wetland surface (accretion and/or erosion).
David Walters measuring surface elevation table that is used to assess changes in wetland surface (accretion and/or erosion).
David Walters measuring surface elevation table that is used to assess changes in wetland surface (accretion and/or erosion).

David Walters measuring surface elevation table that is used to assess changes in wetland surface (accretion and/or erosion) at Money Stump in Blackwater National Wildlife Refuge in Cambridge, Maryland.

Winter 2024 Photo Contest Winner: Melinda Martinez, Honorable Mention category

David Walters measuring surface elevation table that is used to assess changes in wetland surface (accretion and/or erosion) at Money Stump in Blackwater National Wildlife Refuge in Cambridge, Maryland.

Winter 2024 Photo Contest Winner: Melinda Martinez, Honorable Mention category

A male biologist and a female biologist wearing bright green PFD;s wade into the canal to release American Shad
American Shad Release at Conte Lab
American Shad Release at Conte Lab
American Shad Release at Conte Lab

Ted Castro-Santos, EESC, and Katie Deters, PNNL, release tagged American Shad in the canal at the Conte Lab 

Ted Castro-Santos, EESC, and Katie Deters, PNNL, release tagged American Shad in the canal at the Conte Lab 

a view of a laptop computer connected to 2 monitors and a microplate reader.
EESC Microplate Reader
EESC Microplate Reader
EESC Microplate Reader

a view of a laptop computer connected to 2 monitors and a microplate reader. The monitors display data generated from an assay including a standard curve.

a view of a laptop computer connected to 2 monitors and a microplate reader. The monitors display data generated from an assay including a standard curve.

A very small brown bird, with a short tail, in a bird bander's hand
Winter Wren
Winter Wren
Winter Wren

At the Bird Banding Lab's Fall Migration Station, Winter Wrens are one of the smallest species they band. They have the smallest tail measurement at the station, between 26-36 millimeters!  

At the Bird Banding Lab's Fall Migration Station, Winter Wrens are one of the smallest species they band. They have the smallest tail measurement at the station, between 26-36 millimeters!  

A box-like device used to analyze eDNA
PCR machine under hood
PCR machine under hood
PCR machine under hood

A Polymerase Chain Reaction (PCR) machine is one of the scientific devices used to analyze eDNA samples

A Polymerase Chain Reaction (PCR) machine is one of the scientific devices used to analyze eDNA samples

A metal box beside a creek contains equipment that collects and filters water samples
Smith-Root autosampler deployed on Cherry Creek, MT
Smith-Root autosampler deployed on Cherry Creek, MT
Smith-Root autosampler deployed on Cherry Creek, MT

A Smith-Root autosampler is programmed to collect and filter water samples for eDNA analysis every 3 hours on Cherry Creek, MT

A Smith-Root autosampler is programmed to collect and filter water samples for eDNA analysis every 3 hours on Cherry Creek, MT

A female biologist uses a small measuring tape to measure the size of the shell of an eastern box turtle.
Measuring an Eastern Box Turtle
Measuring an Eastern Box Turtle
Measuring an Eastern Box Turtle

A female biologist holds an Eastern box turtle and measures its shell as part of a survey.

A female biologist holds an Eastern box turtle and measures its shell as part of a survey.

A female biologist sits on the ground holding an Eastern box turtle and recording measurements on a piece of paper.
Processing an Eastern Box Turtle
Processing an Eastern Box Turtle
Processing an Eastern Box Turtle

A female biologist records data taken from an Eastern box turtle survey event.

A female biologist records data taken from an Eastern box turtle survey event.

A female biologist holds an Eastern box turtle in the woods to process it as part of a survey.
Biologist Holding Eastern Box Turtle
Biologist Holding Eastern Box Turtle
Biologist Holding Eastern Box Turtle

A female biologist holds an Eastern box turtle in her hand as gets ready to process it as part of a survey.

A female biologist holds an Eastern box turtle in her hand as gets ready to process it as part of a survey.

A female biologist holds an Eastern Box Turtle pointing to an indentation in the underside of the shell.
Biologist and Eastern Box Turtle
Biologist and Eastern Box Turtle
Biologist and Eastern Box Turtle

Biologist Sofia Galvan demonstrates how to identify the gender of an Eastern Box Turtle. 

Biologist Sofia Galvan demonstrates how to identify the gender of an Eastern Box Turtle.