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A male and female stand in front of a large tank of water
Interns Conducting Fish Habitat Research
Interns Conducting Fish Habitat Research
Interns Conducting Fish Habitat Research

Brennan and Emily conducting fish habitat surveys in Catoctin Mountain Park.
 

Brennan and Emily conducting fish habitat surveys in Catoctin Mountain Park.
 

A male and female assess habitat in a spillway plunge pool.
Brennan and Emily assess habitat in a spillway plunge pool.
Brennan and Emily assess habitat in a spillway plunge pool.
Brennan and Emily assess habitat in a spillway plunge pool.

Brennan and Emily assess habitat in a spillway plunge pool                

A male and female observe a scientist performing a procedure on a large salmon
Interns observe a salmon necropsy
Interns observe a salmon necropsy
Interns observe a salmon necropsy

Dr. John Davidson (right) provides instruction on salmon internal anatomy.
 

Dr. John Davidson (right) provides instruction on salmon internal anatomy.
 

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 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. 

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. 

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: 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: Melinda Martinez, Honorable Mention category

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 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 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 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 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.

The yellow-patterned top shell of an Eastern box turtle surrounded by leaves.
Eastern Box Turtle
Eastern Box Turtle
Eastern Box Turtle

An Eastern box turtle in the leaves in the woods of Patuxent.                  

An Eastern box turtle in the leaves in the woods of Patuxent.                  

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. 

The underbelly of a bright orange skinned Eastern box turtle being held by a biologist.
Eastern Box Turtle
Eastern Box Turtle
Eastern Box Turtle

An Eastern Box turtle with vibrant orange skin is caught as part of the Patuxent Box Turtle Survey.

An Eastern Box turtle with vibrant orange skin is caught as part of the Patuxent Box Turtle Survey.

A large red-wood shed with large barn like doors.
New shed at the Bird Banding Station
New shed at the Bird Banding Station
New shed at the Bird Banding Station

A large shed is part of the new bird banding station. It will serve as a more private place for banding and storage.

A large shed is part of the new bird banding station. It will serve as a more private place for banding and storage.

An open book with several figures of different sized black crowns, and a small yellow bird in the banders grip.
Wilson's Warbler
Wilson's Warbler
Wilson's Warbler

Bird Bander reviewing the "Identification Guide to North American Birds" by Peter Pyle, to see if this Wilson's Warbler's black crown gives any indication of its age. 

Bird Bander reviewing the "Identification Guide to North American Birds" by Peter Pyle, to see if this Wilson's Warbler's black crown gives any indication of its age. 

Two brightly colored birds in the hand, one's a male while the other is a female
Northern Parulas
Northern Parulas
Northern Parulas

A comparison of two hatch year (born this year) Northern Parulas. The individual on the left is a male, while a female is on the right, note the color differences including the band of chestnut on the males chest. 

A comparison of two hatch year (born this year) Northern Parulas. The individual on the left is a male, while a female is on the right, note the color differences including the band of chestnut on the males chest. 

A bright yellow bird in the hand
Yellow Warbler
Yellow Warbler
Yellow Warbler

The BBL's Fall Migration Station's second banded Yellow Warbler in the last 10 years! 

The BBL's Fall Migration Station's second banded Yellow Warbler in the last 10 years!