Vervoort, R., Schmaltz, L. E., Hooijmeijer, J. C., Verkuil, Y. I., Kempenaers, B., & Piersma, T. (2022). Within- and between-year variation in the presence of individually marked Ruff Calidris pugnax at a stopover site during northward migration. Ardea, 110(1), 41-59. doi:10.5253/arde.v110i1.a1.