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.
Does banding hurt birds?
No, banding does not hurt birds. When proper techniques and equipment are carefully employed, it’s a safe procedure for birds. Trained banders, who apply their expertise and thoughtfulness towards the health and well-being of the birds, follow strict procedures based on the Bander’s ethic code.
Related
I found (or killed) a bird with a band or color marker around its leg. What do I do?
How do I get a certificate of appreciation after reporting a banded bird?
What are the ethics and responsibilities of Bird Banders?
Who can band birds?
How do I obtain a federal bird banding permit?
How do I renew or modify my existing federal bird banding permit?
How do I submit bird banding and/or bird recapture data?
I have a federal permit to band birds. How do I order bands?
What functions are available in the Bander Portal for bird banders?
How can I get bird banding and encounter data, and longevity records, from the Bird Banding Laboratory?
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.

Juvenile bar-tailed godwit "B6" with metal leg band. At this time researchers put a metal band on the chick and glued a small (0.5 gram) VHF transmitter to the bird.
Juvenile bar-tailed godwit "B6" with metal leg band. At this time researchers put a metal band on the chick and glued a small (0.5 gram) VHF transmitter to the bird.
A Canada Warbler with new band at the Bird Banding Lab's fall station.
A Canada Warbler with new band at the Bird Banding Lab's fall station.
Measuring the wing length of a banded Iiwi
Measuring the wing length of a banded Iiwi
Cerulean warblers breed in mature deciduous forests throughout the eastern U.S., but are particularly abundant in oak-dominated forests that contain canopy gaps and a complex canopy structure.
Cerulean warblers breed in mature deciduous forests throughout the eastern U.S., but are particularly abundant in oak-dominated forests that contain canopy gaps and a complex canopy structure.

USGS scientist holding an adult banded Piping Plover on Lake Sakakawea, North Dakota
USGS scientist holding an adult banded Piping Plover on Lake Sakakawea, North Dakota
Banded adult Piping Plover on river mile 1334 of the Missouri River, North Dakota
Banded adult Piping Plover on river mile 1334 of the Missouri River, North Dakota
A young Northern Shrike captured at a banding station on the Seward Peninsula. This photo was taken as part Phase 1 of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
A young Northern Shrike captured at a banding station on the Seward Peninsula. This photo was taken as part Phase 1 of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.

Gray-cheeked Thrush with a band from the Seward Peninsula in Alaska.
Gray-cheeked Thrush with a band from the Seward Peninsula in Alaska.

by Susan Haig, Wildlife Ecologist
A color banded plover in the hand of a scientist.
A color banded plover in the hand of a scientist.
Foundational science in flight—USGS bird programs support conservation, culture, and a thriving U.S. economy
By land, air, and water — U.S. Geological Survey science supporting fish and wildlife migrations throughout North America
The U.S. Geological Survey Bird Banding Laboratory: an integrated scientific program supporting research and conservation of North American birds
Related
I found (or killed) a bird with a band or color marker around its leg. What do I do?
How do I get a certificate of appreciation after reporting a banded bird?
What are the ethics and responsibilities of Bird Banders?
Who can band birds?
How do I obtain a federal bird banding permit?
How do I renew or modify my existing federal bird banding permit?
How do I submit bird banding and/or bird recapture data?
I have a federal permit to band birds. How do I order bands?
What functions are available in the Bander Portal for bird banders?
How can I get bird banding and encounter data, and longevity records, from the Bird Banding Laboratory?
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.

Juvenile bar-tailed godwit "B6" with metal leg band. At this time researchers put a metal band on the chick and glued a small (0.5 gram) VHF transmitter to the bird.
Juvenile bar-tailed godwit "B6" with metal leg band. At this time researchers put a metal band on the chick and glued a small (0.5 gram) VHF transmitter to the bird.
A Canada Warbler with new band at the Bird Banding Lab's fall station.
A Canada Warbler with new band at the Bird Banding Lab's fall station.
Measuring the wing length of a banded Iiwi
Measuring the wing length of a banded Iiwi
Cerulean warblers breed in mature deciduous forests throughout the eastern U.S., but are particularly abundant in oak-dominated forests that contain canopy gaps and a complex canopy structure.
Cerulean warblers breed in mature deciduous forests throughout the eastern U.S., but are particularly abundant in oak-dominated forests that contain canopy gaps and a complex canopy structure.

USGS scientist holding an adult banded Piping Plover on Lake Sakakawea, North Dakota
USGS scientist holding an adult banded Piping Plover on Lake Sakakawea, North Dakota
Banded adult Piping Plover on river mile 1334 of the Missouri River, North Dakota
Banded adult Piping Plover on river mile 1334 of the Missouri River, North Dakota
A young Northern Shrike captured at a banding station on the Seward Peninsula. This photo was taken as part Phase 1 of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.
A young Northern Shrike captured at a banding station on the Seward Peninsula. This photo was taken as part Phase 1 of the Changing Arctic Ecosystem Boreal-Arctic Transition Zone program.

Gray-cheeked Thrush with a band from the Seward Peninsula in Alaska.
Gray-cheeked Thrush with a band from the Seward Peninsula in Alaska.

by Susan Haig, Wildlife Ecologist
A color banded plover in the hand of a scientist.
A color banded plover in the hand of a scientist.