Abstract
We analysed hydrogen stable isotopes (δ2H) in
first generation median wing covert feathers sampled from a
free-flying first winter Red-breasted Goose Branta ruficollis
caught at Storøya, Norway in late April 2019. Highly depleted
δ2H values corresponded to those predicted if these feathers
were grown in the Russian Arctic breeding areas of this
species, too highly depleted compared to predicted values for
a bird raised in captivity in Norway or elsewhere in western
Europe. Although these data do not provide irrefutable proof
of the individual’s wild origin, they strongly suggest that
even records outside the normal range for this species can
potentially constitute a genuinely wild-reared individual.
first generation median wing covert feathers sampled from a
free-flying first winter Red-breasted Goose Branta ruficollis
caught at Storøya, Norway in late April 2019. Highly depleted
δ2H values corresponded to those predicted if these feathers
were grown in the Russian Arctic breeding areas of this
species, too highly depleted compared to predicted values for
a bird raised in captivity in Norway or elsewhere in western
Europe. Although these data do not provide irrefutable proof
of the individual’s wild origin, they strongly suggest that
even records outside the normal range for this species can
potentially constitute a genuinely wild-reared individual.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Ornis Norvegica |
| Vol/bind | 43 |
| Sider (fra-til) | 1-3 |
| Antal sider | 3 |
| ISSN | 1502-0878 |
| DOI | |
| Status | Udgivet - jun. 2020 |