Arizaga, J. et al. 2010. Non-breeding reed warblers Acrocephalus scirpaceus (Hermann, 1804) in June in southern Europe: local or still migrating birds?. Belgian Journal of Zoology. 140, 1 (Jun. 2010), 74–76. DOI:https://doi.org/10.26496/bjz.2010.191.