Barshep, Yahkat, Ulf Ottosson, Jonas Waldenström, and Mark Hulme. 2012. “Non-Breeding Ecology of the Whinchat Saxicola Rubetra in Nigeria”. Ornis Svecica 22 (1–2). Lund, Sweden:25–32. https://doi.org/10.34080/os.v22.22591.