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A birds wing spread carefully open by a hand, all of the feathers are brown except for a handful which are completely white
Leucism in a White-throated Sparrow
Leucism in a White-throated Sparrow
Leucism in a White-throated Sparrow

See that one white feather? This white-throated sparrow is displaying leucism, in which there is partial loss of pigmentation. 

See that one white feather? This white-throated sparrow is displaying leucism, in which there is partial loss of pigmentation. 

A small owl with bright yellow eyes and tan and white feathers held by BBL Staff Biologist Stephanie in a puffy green winter
BBL Biologist holds a recaptured Northern Saw-whet Owl
BBL Biologist holds a recaptured Northern Saw-whet Owl
BBL Biologist holds a recaptured Northern Saw-whet Owl

A Recaptured Northern Saw-whet Owl at the Willistown Conservation Trust, Banding station at Rushton Woods Preserve, Pennsylvania. This owl is being held safely in the "banders grip" by BBL Biologist, Stephanie Egger. This owl was originally banded in Thunder Bay Ontario.

A Recaptured Northern Saw-whet Owl at the Willistown Conservation Trust, Banding station at Rushton Woods Preserve, Pennsylvania. This owl is being held safely in the "banders grip" by BBL Biologist, Stephanie Egger. This owl was originally banded in Thunder Bay Ontario.

A small owl with bright yellow eyes and tan and white feathers.
Northern Saw-whet Owl
Northern Saw-whet Owl
Northern Saw-whet Owl

A Recaptured Northern Saw-whet Owl at the Willistown Conservation Trust, Banding station at Rushton Woods Preserve, Pennsylvania. This owl was originally banded in Thunder Bay Ontario.

A Recaptured Northern Saw-whet Owl at the Willistown Conservation Trust, Banding station at Rushton Woods Preserve, Pennsylvania. This owl was originally banded in Thunder Bay Ontario.

coastal wetland plants in an estuary
New Zealand coastal wetland
New Zealand coastal wetland
New Zealand coastal wetland

Nukuhou coastal wetland. A tidal wetland with grey mangroves (Avicennia marina) and salt marsh threatened by sea level rise. At Ohiwa Harbor, North Island, New Zealand.

Nukuhou coastal wetland. A tidal wetland with grey mangroves (Avicennia marina) and salt marsh threatened by sea level rise. At Ohiwa Harbor, North Island, New Zealand.

The tail of bird held out by a human hand to examine, the tail feathers are of a reddish-brown bird
Tail with a Fault Bar
Tail with a Fault Bar
Tail with a Fault Bar

Scientists examine the tail of a Fox Sparrow for growth bars. Growth bars are faint lines in the tail which illustrate the normal growth of feathers, typically forming every 24 hours as the feather grows.

Scientists examine the tail of a Fox Sparrow for growth bars. Growth bars are faint lines in the tail which illustrate the normal growth of feathers, typically forming every 24 hours as the feather grows.

a large bird held in the hand, the bird is streaked with dark reds, browns, grays, and whites
Fox Sparrow in the hand
Fox Sparrow in the hand
Fox Sparrow in the hand

Fox Sparrows are the largest species of sparrow caught at the Fall Migration Station at Patuxent Research Refuge. 

Fox Sparrows are the largest species of sparrow caught at the Fall Migration Station at Patuxent Research Refuge. 

Dots representing raw movement data
Movement of waterfowl infected with AIV
Movement of waterfowl infected with AIV
Movement of waterfowl infected with AIV

Spring migration departure date (a–e) and duration of first stopover (f–j) by species and infection status across 84 individuals with paired influenza and telemetry data. Partially transparent points show raw data; large points and error bars show means and 95% confidence intervals estimated from linear models.

Spring migration departure date (a–e) and duration of first stopover (f–j) by species and infection status across 84 individuals with paired influenza and telemetry data. Partially transparent points show raw data; large points and error bars show means and 95% confidence intervals estimated from linear models.

A bright reddish-purple bird in the hand
Purple Finch
Purple Finch
Purple Finch

Purple Finch banded at Patuxent Research Refuge mist netting under the powerlines.

Purple Finch banded at Patuxent Research Refuge mist netting under the powerlines.

a small brown bird, with a pink bill, in the hand
Banded Field Sparrow
Banded Field Sparrow
Banded Field Sparrow

A Field Sparrow banded at the Fall Migration Station at Patuxent Research Refuge. 

A Field Sparrow banded at the Fall Migration Station at Patuxent Research Refuge. 

A piece of machinery captured in motion moving liquid using pipette tips
nCounterMax Automated Prep Station
nCounterMax Automated Prep Station
nCounterMax Automated Prep Station

image of the automated prep station for the Nanostring nCounter Max. The device prepares cartridges for CodeSet Gene Expression Analysis

image of the automated prep station for the Nanostring nCounter Max. The device prepares cartridges for CodeSet Gene Expression Analysis

Scientist inserting a needle with a syringe in the caudal vein (located below the spine) of a smallmouth bass
Taking a blood sample from the caudal vein of a smallmouth bass
Taking a blood sample from the caudal vein of a smallmouth bass
Taking a blood sample from the caudal vein of a smallmouth bass

Nonlethal smallmouth bass sampling is being done to address health concerns and population declines that may be associated with polyfluoroalkyl substances (PFAS) in the upper Potomac River.  As part of our nonlethal sampling methods, blood/plasma can be analyzed for PFAS in smallmouth bass.

Nonlethal smallmouth bass sampling is being done to address health concerns and population declines that may be associated with polyfluoroalkyl substances (PFAS) in the upper Potomac River.  As part of our nonlethal sampling methods, blood/plasma can be analyzed for PFAS in smallmouth bass.

Scientist examining the gills of a smallmouth bass for abnormalities such as parasites, erosion, and fraying.
Observing smallmouth bass gills for abnormalities
Observing smallmouth bass gills for abnormalities
Observing smallmouth bass gills for abnormalities

Nonlethal smallmouth bass sampling is being done to address health concerns and population declines that may be associated with polyfluoroalkyl substances (PFAS) in the upper Potomac River.

Nonlethal smallmouth bass sampling is being done to address health concerns and population declines that may be associated with polyfluoroalkyl substances (PFAS) in the upper Potomac River.

A small warbler is held up to a hand, the contrast shows the black whisker-like bristles the bird has around its bill
Rictal Bristles of an American Redstart
Rictal Bristles of an American Redstart
Rictal Bristles of an American Redstart

American Redstarts have rictal bristles, stiff feathers around the bill, that are believed to help assist in catching insects during flight.

American Redstarts have rictal bristles, stiff feathers around the bill, that are believed to help assist in catching insects during flight.

2 females standing on each side of a net surrounded by trees and brush
Bird Banding Nets
Bird Banding Nets
Bird Banding Nets

Lauren Walker and Stephanie Egger remove birds from the nets at the banding station to band and record data. 

Lauren Walker and Stephanie Egger remove birds from the nets at the banding station to band and record data. 

a long net set up between two poles surrounded by fall leave covered trees and brush
Bird Banding Station nets
Bird Banding Station nets
Bird Banding Station nets

A visual of one of the nets that are used at the banding station on the Patuxent Research Refuge.

A visual of one of the nets that are used at the banding station on the Patuxent Research Refuge.

Blue-ish bird with black crown
Tufted Titmouse
Tufted Titmouse
Tufted Titmouse

A Tufted Titmouse is held after being released from a net as part of the Bird Banding Lab's fieldwork in October 2022.

A Tufted Titmouse is held after being released from a net as part of the Bird Banding Lab's fieldwork in October 2022.

A tiny brown bird in the hand, its brown feathers are barred in black
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!  

close-up of a blue jay bird in the hand
BBL Banding Station Blue Jay
BBL Banding Station Blue Jay
BBL Banding Station Blue Jay

A beautiful blue jay that was caught at the PRR BBL Bird Banding Fall Migration Station

A beautiful blue jay that was caught at the PRR BBL Bird Banding Fall Migration Station

a small brown bird in the hand with a white throat patch
White-throated Sparrow Encounter
White-throated Sparrow Encounter
White-throated Sparrow Encounter

A banded White-throated Sparrow, like the one pictured, was encountered fall 2022 at BBL's Fall Migration Station in Patuxent Research Refuge, Laurel, MD. Typically encounters of banded birds are ones previously banded by the station.

A banded White-throated Sparrow, like the one pictured, was encountered fall 2022 at BBL's Fall Migration Station in Patuxent Research Refuge, Laurel, MD. Typically encounters of banded birds are ones previously banded by the station.

A undersea robot sits on the stern of a research vessel in the Gulf of Mexico at sunset
Sun setting on the remotely operated vehicle Mohawk
Sun setting on the remotely operated vehicle Mohawk
Sun setting on the remotely operated vehicle Mohawk

Gulf of Mexico sunset and the remotely operated vehicle Mohawk (UNCW-Undersea Vehicles Program) aboard the Research Vessel Point Sur

Gulf of Mexico sunset and the remotely operated vehicle Mohawk (UNCW-Undersea Vehicles Program) aboard the Research Vessel Point Sur

A scientist sits in front of video monitors and computer equipment taking images from benthic communities using a robot
Scientist images benthic communities using a remotely operated vehicle
Scientist images benthic communities using a remotely operated vehicle
Scientist images benthic communities using a remotely operated vehicle

A scientist, Cheryl Morrison, takes images of benthic communities in the Gulf of Mexico using the Mohawk (UNCW-Undersea Vehicles Program)

A scientist, Cheryl Morrison, takes images of benthic communities in the Gulf of Mexico using the Mohawk (UNCW-Undersea Vehicles Program)