Report number 188 from Kvismare Bird Observatory:
Breeding prerequisites for Ortolan Bunting Emberiza hortulana in Swedish farmland with special focus on foraging
Sondell J, Durà C & Persson M
Article in journal
Ornis Svecica. 2019. Volume 29, page(s) 5-25. https://doi.org/10.34080/os.v29.19554