Ringschnabelmöwe (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ringschnabelmöwe" in German language version.

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doi.org

Callaghan, C.T., Nakagawa, S., & Cornwell, W.K. (2021). Global abundance estimates for 9,700 bird species. Proceedings of the National Academy of Sciences. 118 (21), e2023170118, doi:10.1073/pnas.2023170118.