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1 November 2010 Reporting Difference for Colored Patagial Tags on Ring-Billed Gulls
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Abstract

The possible role of tag color in mediating behaviors that could bias resighting rate has not been examined. In a study that began in 2007, we marked 725 ring-billed gulls (Larus delawarensis) with Bondcote royal blue, green, yellow, or orange patagial tags. Reports we gathered over 2 years indicated approximately a 3.4∶1 bias in resighting rate toward yellow or orange tags. The observed bias is inconsistent with color-associated visibility bias or differential mortality among color-tagged breeding adults. Potential behavioral effects of tag color on individuals and conspecifics should be considered by biologists when planning marking studies.

Thomas W. Seamans, Scott Beckerman, John Hartmann, James A. Rader, and Bradley F. Blackwell "Reporting Difference for Colored Patagial Tags on Ring-Billed Gulls," Journal of Wildlife Management 74(8), 1926-1930, (1 November 2010). https://doi.org/10.2193/2009-304
Published: 1 November 2010
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