I recovered a bird band with illegible numbers. How can I get the band etched so I can read and report the numbers?

Most bird bands are made of an aluminum alloy and have unique numbers engraved. These numbers can wear off with time to the point that one or more numbers become illegible. The time that it takes for a bird band number to wear off depends on the habits of that bird species and the amount of time that it spends in the water. For instance, a band on a Mallard might wear off one number in 6 to 8 years, while all the numbers on the band of a diving bird (like a Redhead) might wear off in the same amount of time.

If you find a bird band with one or more illegible numbers, mail it to the Bird Banding Laboratory to be cleaned with oxidative chemicals (etched). Even if the band is completely worn, we can typically retrieve the number(s). Regardless of the outcome, the band will be returned to you through the mail. We will also email a Certificate of Appreciation to you with the banding details of the bird.

Flatten the band and tape it between two pieces of cardboard or, if you want to keep it round, place it in a small box. Good packaging is important to make sure the band does not cut the envelope while shipping and get lost in the postal system. Please send along with the band your mailing address, email address and the information on how, when, and where you found the band.

Please write "HAND CANCEL" on the envelope and send it to: Bird Banding Laboratory, Attention: Band to Be Etched, 12100 Beech Forest Lane, Laurel MD 20708.

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Limpiar un anillo con oxidación química para hacer visibles los números de un anillo

La mayoría de los anillos están hechos de una aleación de aluminio y tienen grabados números únicos. Estos números pueden desaparecer con el tiempo hasta el punto de que un número, pocos números o todo el anillo se vuelven ilegibles. El tiempo para que los números de un anillo se borren depende en gran medida de la cantidad de tiempo que las especies de aves pasan en el agua. Por ejemplo, un numero en un anillo en un Pato de Collar puede borrarse entre 8 y 10 años, mientras que en este mismo tiempo un anillo en un Pato Cabeza Roja se puede desgastar completamente (todos los números ilegibles).

Si encuentra un anillo de aves con uno o más números ilegibles, envíelo por correo al Laboratorio de Anillamiento de Aves para limpiarlo con productos químicos oxidativos (del inglés, “etching”). Incluso si el anillo está completamente desgastada, podemos recuperar el número (s) y devolver el anillo después de que el número (s) se haya determinado. También le enviaremos un Certificado de Apreciación con los detalles del ave con el anillo.

Para enviar un anillo al Laboratorio de Anillamiento de Aves, aplane el anillo y colóquelo entre dos trozos de cartón o, si desea mantener el anillo redondo, colóquelo en una caja pequeña. Un buen empaquetamiento es importante para asegurarse de que el anillo no corte el sobre durante su envió y se pierda en el sistema postal. Envíe junto con el anillo, su dirección de correo electrónico y la información sobre cómo, cuándo y dónde encontró el anillo. Por favor escriba en el sobre HAND CANCEL y envíelo a la siguiente dirección:

Por favor escribe en el sobre HAND CANCEL y mándelo a la siguiente dirección: Bird Banding Laboratory, Attention: Band to Be Etched, 12100 Beech Forest Lane, Laurel MD 20708.

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Gravure d’une bague usée ou d’une bague illisible

La plupart des bagues sont faites d’un alliage d’aluminium. Les chiffres sont gravés dans la bague et peuvent s’effacer au fil du temps. Chez un Canard colvert, un chiffre d’une bague moyenne s’efface après 8 à 10 ans, alors que chez un Fuligule à tête rouge, aucun chiffre n’est lisible après cette même période. L’usure des bagues dépend grandement du temps qu’un oiseau passe dans l’eau à la recherche de nourriture. Certaines espèces semblent user leurs bagues plus rapidement que d’autres selon leur comportement d’alimentation.

Si vous trouvez une bague d’oiseau dont un chiffre ou plus s’est effacé (ou si le numéro de la bague est percé de grenaille), envoyez-la par la poste au Bird Banding Laboratory pour être gravée. Le numéro peut être récupéré dans la plupart des cas. Les bagues sont gravées au moyen d’une solution d’acide. Elles sont plus minces là où le numéro a été gravé. Il suffit de rincer la bague pour distinguer le numéro. La bague vous sera retournée lorsque son numéro aura été déterminé.

Pour envoyer une bague au Bird Banding Laboratory, aplatissez-la, fixez-la avec du ruban adhésif entre deux morceaux de carton, emballez le paquet dans de la bourre ou placez-le dans une petite boîte si vous voulez que la bague reste ronde. Ceci est très important, car autrement la bague peut couper l’enveloppe et être perdue dans le système postal. Indiquez comment, quand et où vous avez trouvé la bague, ainsi que votre adresse postale et votre adresse électronique. Inscrivez HAND CANCEL sur l’enveloppe et envoyez-la à l’adresse suivante : Bird Banding Laboratory, Attention: Band to Be Etched, 12100 Beech Forest Lane, Laurel MD 20708. La bague vous sera retournée par la poste peu importe si nous avons réussi ou non à récupérer le numéro.

N’oubliez pas d’indiquer votre adresse électronique afin de nous permettre de vous envoyer par courriel votre certificat d’appréciation, qui inclura les détails sur le baguage de l’oiseau.

 

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 Bird being banded with a USGS federal band at BBL fall migration monitoring station
August 30, 2018

Bird being banded with a USGS federal band at BBL fall migration monitoring station

Federal bird bands managed and distributed by Craig “Tut” Tuthill
September 14, 2017

Federal bird bands managed and distributed by Craig “Tut” Tuthill

banding waterfowl
July 26, 2017

The captured waterfowl are gently banded with a unique number that can be read if and when it is captured again. 

October 27, 2011

by Susan Haig, Wildlife Ecologist

 

  • Scientists are studying global migratory animal movements throughout their annual cycles to improve conservation efforts
  • Changing climate conditions have accentuated this need, as species movements and their ranges are fluctuating every year
  • Technology being used to study the migratory patterns ranges from leg bands to satellite telemetry and isotopic markers
  • The USGS and the Smithsonian Institution have partnered to form the Migratory Connectivity Project to address this issue
Photo of Bird Bands in a Variety of Sizes and Types

Photo of Bird Bands in a Variety of Sizes and Types

Aluminum band and one plastic colored leg bands in a Brown Pelican 

Aluminum band and one plastic colored leg bands in a Brown Pelican