This dataset contains information about outputs of a video-conference expert elicitation exercise carried out in March 2023 to estimate demographic consequences of potential seabird compensatory measures within the context of protected breeding populations in the North Sea. The outputs comprise of expert judgements from 6 experts given as quantitative values (median, quantiles and range) for the impact of each potential compensation measure on seabird demography (survival and productivity) for a range of species or species groups, and the estimated parameters of a probability distribution fitted using these judgements. The list of measures and species to consider was decided by the experts. The elicitation exercise was organised and carried out by UKCEH and Biomathematics and Statistics, Scotland (BioSS). Distribution fitting was carried out by BioSS. One expert gave incomplete quantitative judgements, which were not included in the final estimation of distribution parameters. This work was funded by NERC, The Crown Estate, Crown Estate Scotland and DEFRA as part of the ECOWINGS project within the ECOWind programme Full details about this dataset can be found at https://doi.org/10.5285/8847e78c-8778-474b-b2a2-3931beeb0e1b
