Hille, Sabine; Thiollay, Jean-Marc. The imminent extinction of the kites Milvus milvus fasciicauda and Milvus m. migrans on the Cape Verde Islands. Bird Conservation International. 2000, 10 (4): 361–369. doi:10.1017/S0959270900000319.
Schreiber, Arnd; Stubbe, Michael; Stubbe, Annegret. Red kite (Milvus milvus) and black kite (M. migrans): minute genetic interspecies distance of two raptors breeding in a mixed community (Falconiformes: Accipitridae). Biological Journal of the Linnean Society. 2000, 69 (3): 351–365. doi:10.1111/j.1095-8312.2000.tb01210.x.
Kumar N, Qureshi Q, Jhala YV, Gosler AG, Sergio F. Offspring defense by an urban raptor responds to human subsidies and ritual animal-feeding practices. PLoS ONE. 2018, 13 (10). e0204549. https://doi.org/10.1371/journal.pone.0204549