The influence of colour‐rings on recovery rates of herring and lesser black‐backed gulls

Abstract

Comparison of recovery rates of Herring and Lesser Black‐backed Gulls with and without colour‐rings in addition to a metal ring shows that colour‐ringed birds are twice as likely to be recovered and reported to the British Trust for Ornithology. Implications for studies of mortality rates are discussed. © 1985 Taylor & Francis Group, LLC.