• kootepe@sopuli.xyz
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      3 days ago

      Birds are monitored by putting a ring on their leg. The ring can then be used to identify the bird if it’s captured or seen with a telescope/binoculars/camera by someone else, or if their carcass is found. Typically it’s just a small metal ring but these days multiple colored rings can also be used, those are put into a public database that anyone can use to identify the bird and see where it has been spotted, when it was ringed, how old it is etc.

      • toynbee@lemmy.world
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        3 days ago

        Gotcha.

        I was familiar with the concept but not the phrasing. Thanks for the edification!