Bustnes, J.O., Helberg, M. and Bårdsen, B.-J. 2022. Reproductive success of threatened northern Lesser Black-backed Gulls (Larus fuscus fuscus) in relation to nest predation by Ravens (Corvus corax). Ornis Fennica. 99, 1 (Mar. 2022), 00–00. DOI:https://doi.org/10.51812/of.115081.