The cover is from "Genetic diversity and sperm characteristics are not associated in two bluethroat (Luscinia svecica) populations", by Johnsen et al. The photo of a courting adult male bluethroat was taken by photographer Bjørn Aksel Bjerke, close to one of the field sites in the study,  at Øvre Heimdalen in the Jotunheimen mountains in Norway, on May 22 in 2022. Male bluethroats display their beautiful throat and tail colours at close distance to the female in the early parts of the breeding season.

Download high resolution file: jab_2023_9-10_cover.pdf