Surdo, S., Cusimano, C.A. and Lo Duca, R. 2023. New data on the expansion of the Eurasian Thick-knee <i>Burhinus oedicnemus</i> in Sicily. A consideration of citizen science . Rivista Italiana di Ornitologia. 93, 1 (Jul. 2023). DOI:https://doi.org/10.4081/rio.2023.671.