This project collects the genomic and transcriptomic data generated for Chroicocephalus ridibundus, common name black-headed gull, to facilitate genome assembly and annotation as part of the Darwin Tree of Life Project (https://www.darwintreeoflife.org/). The data under this project are made available subject to the Darwin Tree of Life Open Data Release Policy (https://www.darwintreeoflife.org/project-resources/).