https://phaidra.vetmeduni.ac.at/o:4491 Berries to Go: Distinct Passerine Spring Migration Frugivory at a Main Mediterranean Stopover Site Slezacek, Julia Julia Slezacek 0000-0001-9394-8180 University of Veterinary Medicine Vienna Kostner, Benjamin Benjamin Kostner Agabiti, Chiara Chiara Agabiti Cardinale, Massimiliano Massimiliano Cardinale Fusani, Leonida Leonida Fusani 0000-0001-8900-796X University of Veterinary Medicine Vienna Wiley journal article open access eng Many animals show phenotypic flexibility in response to a seasonal environment. Especially migratory birds have been found to exhibit striking physiological and behavioural adaptations to overcome the negative impacts of environmental seasonality. Migratory songbirds often show extreme changes in feeding physiology and behaviour before embarking on a migratory flight, including predominantly insectivorous species switching their diet preference to a frugivorous one before autumn migration. Yet, little is known about frugivory during spring migration in temperate zones. In this paper, we report that five songbird species forage on the fruits of two Mediterranean plants, Prasium majus and Rhamnus alaternus, during spring stopover in the Tyrrhenian Sea. Analyses of faecal content showed that fruits of P. majus were generally preferred, with garden warblers (Sylvia borin) having the highest percentage of faecal samples containing seeds of both plants. Availability of ripe P. majus fruits increased over the sampling season and correlated positively with the number of faecal samples containing seeds. Our findings reveal a relevance of fruit at a temperate zone stopover site during spring migration for five passerine species. Frugivory during spring migration may represent an easy means for birds to acquire macronutrients, micronutrients and water. This may be especially important at resource-poor stopover sites and may aid birds' continuation of the northward flight towards their breeding grounds in a timely manner. Facultative Frugivory Passerine Spring Migration Prasium Majus Rhamnus Alaternus Refuelling Stopover http://creativecommons.org/licenses/by/4.0/ https://phaidra.vetmeduni.ac.at/api/object/o:4491/download 10.1002/ece3.72239 https://phaidra.vetmeduni.ac.at/o:605 application/pdf Ecology and Evolution issn:2045-7758 VoR Ecology and Evolution 15 10 1.08 MB 2025