Thibault, J.-C., Frelin, C., Legrand, N., Lepori, L., Rossi, A. and Cibois, A. 2023. Distribution and characteristics of urban nesting sites of sympatric swifts. Rivista Italiana di Ornitologia. 93, 1 (Jun. 2023). DOI:https://doi.org/10.4081/rio.2023.628.