Evidence From Ringing

Some vagrants wore rings which confirmed their place of origin, with more than 30 records of ringed North American vagrants in Europe (Tables 10.5 and 10.6), plus at least one record of a successful return to the breeding range, namely a Ring-billed Gull Larus delawarensis ringed in Norway and recovered in Canada (Cottridge & Vinicombe 1996). Such records mostly involve seabirds and waterfowl, which typically have high recovery rates. These records show conclusively, for anyone who may have doubted it, that vagrancy is a real and natural phenomenon, which extends to species commonly kept in captivity (such as waterfowl).

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