See that one white feather? This white-throated sparrow is displaying leucism, in which there is partial loss of pigmentation.
Images
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](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/SEGGER_IMG_4006.jpg?itok=bmR4RZrC)
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.
The federal band numbers on 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.
The federal band numbers on 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.
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.
BBL Biologist, Stephanie Egger reads the federal band numbers on 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.
BBL Biologist, Stephanie Egger reads the federal band numbers on 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.
The feathers of a Northern Saw-whet Owl are being examined for ageing purposes.
The feathers of a Northern Saw-whet Owl are being examined for ageing purposes.
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.
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.
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.
Two Dark-eyed Juncos one male and one female, banded at Patuxent Research Refuge
Two Dark-eyed Juncos one male and one female, banded at Patuxent Research Refuge
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.
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 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.
A Ruby Crowned Kinglet is held by a bander at the Patuxent Research Refuge Bird Banding station.
A Ruby Crowned Kinglet is held by a bander at the Patuxent Research Refuge Bird Banding station.
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.
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 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 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 banded Black-throated Blue Warbler hatch-year male, at the USGS Bird Banding Lab's Fall Migration Station.
A banded Black-throated Blue Warbler hatch-year male, at the USGS Bird Banding Lab's Fall Migration Station.
This American Redstart is one of the more common species, out of the total 33 warbler species, the Bird Banding Lab has banded at the Fall Migration Station at Patuxent Research Refuge.
This American Redstart is one of the more common species, out of the total 33 warbler species, the Bird Banding Lab has banded at the Fall Migration Station at Patuxent Research Refuge.
Cape May Warbler (Setophaga tigrina) banded at the USGS Bird Banding Lab during fall migration.
Cape May Warbler (Setophaga tigrina) banded at the USGS Bird Banding Lab during fall migration.