Finch, T., Branston, C., Clewlow, H., Dunning, J., Franco, A. M., Račinskis, E., …Butler, S. J. (2019). Context-dependent conservation of the cavity-nesting European Roller. Ibis: International Journal of Avian Science, 161(3), 573-589. https://doi.org/10.1111/ibi.12650