New cover image for Behavioral Ecology and Sociobiology

Starting with the May issue, BES has a new cover image.

Eggshell coloration is a cue of female condition but is not related to male provisioning effort in the red-backed shrike Lanius collurio.

See Szala K, Tobolka M, Surmacki A (2025) Eggshell coloration is related to condition of females and offspring but not to male provisioning effort in a cup-nesting passerine. Behav Ecol Sociobiol 79:66.

Photo credits: Klaudia Szala.