Identifcation of ringer by ring code (black-headed gull)

Gestart door batsvensson, maart 20, 2015, 12:30:33 PM

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I know there exists a site were you can find back who has ringed a certain BHG based on the ring code (colour rings), however I cannot find the URL for this site and forgot the name of it. I would appreciate if someone could post a link to that site.

Thanks in advance,

Jeroen Nagtegaal

Groet, Jeroen Nagtegaal
Moderator subforum Ringen

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