Data and script belong to: Oortwijn, T., de Fouw, J., Petersen, J.M. et al. Sulfur in lucinid bivalves inhibits intake rates of a molluscivore shorebird. Oecologia (2022). https://doi.org/10.1007/s00442-022-05170-3 Corresponding author: tim.oortwijn@nioz.nl It contains 5 datasets: Loripes_sulfur.csv contains sulfur measurements of individual Loripes Loripes_weight.csv contains dry flesh and shell masses of individual Loripes Intake_data.csv contains the consumption rates of red knots on Loripes Gizzard_measurements.csv contains gizzard measurements of individual red knots at different moments Loripes_consumers.csv contains individual red knots that either accepted Loripes as diet in the first days of captivity or not and their bill lengths And an R script: Script.R which contains the code for the statistical analyses and visualisation of the data