Negro, Juan J.; Bortolotti, Gary R.; Mateo, Rafael; García, Isabel M. (2009). "Porphyrins and pheomelanins contribute to the reddish juvenal plumage of black-shouldered kites". Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology. 153 (3): 296–299. doi:10.1016/j.cbpb.2009.03.013. PMID19351566.
Negro, Juan J.; Pertoldi, Cino; Randi, Ettore; Ferrero, Juan J.; López-Caballero, José M.; Rivera, Domingo; Korpimäki, Erkki; Boal, Clint (1 September 2006). "Convergent evolution of Elanus kites and the owls". Journal of Raptor Research. 40 (3): 222–225. doi:10.3356/0892-1016(2006)40[222:ceoeka]2.0.co;2. hdl:10261/33813. ISSN0892-1016. S2CID85004744.
Bed'Hom, Bertrand; Coullin, Philippe; Guillier-Gencik, Zuzana; Moulin, Sibyle; Bernheim, Alain; Volobouev, Vitaly (1 April 2003). "Characterization of the atypical karyotype of the black-winged kite Elanus caeruleus (Falconiformes: Accipitridae) by means of classical and molecular cytogenetic techniques". Chromosome Research. 11 (4): 335–343. doi:10.1023/a:1024091923939. ISSN0967-3849. PMID12906130. S2CID13145368.
Balbontin, J.; Negro, J.J.; Sarasola, N.H.; Ferrero, J.J.; Rivera, D. (2008). "Land-use changes may explain the recent range expansion of the Black-shouldered Kite Elanus caeruleus in southern Europe". Ibis. 150 (4): 707–716. doi:10.1111/j.1474-919X.2008.00845.x. hdl:11336/81744.
Clay., Theresa (1 March 1958). "Three New Species of Degeeriella Neumann (mallophaga) from the Falconiformes (aves)". Proceedings of the Royal Entomological Society of London B. 27 (1–2): 1–7. doi:10.1111/j.1365-3113.1958.tb01512.x. ISSN1365-3113.
Negro, Juan J.; Pertoldi, Cino; Randi, Ettore; Ferrero, Juan J.; López-Caballero, José M.; Rivera, Domingo; Korpimäki, Erkki; Boal, Clint (1 September 2006). "Convergent evolution of Elanus kites and the owls". Journal of Raptor Research. 40 (3): 222–225. doi:10.3356/0892-1016(2006)40[222:ceoeka]2.0.co;2. hdl:10261/33813. ISSN0892-1016. S2CID85004744.
Balbontin, J.; Negro, J.J.; Sarasola, N.H.; Ferrero, J.J.; Rivera, D. (2008). "Land-use changes may explain the recent range expansion of the Black-shouldered Kite Elanus caeruleus in southern Europe". Ibis. 150 (4): 707–716. doi:10.1111/j.1474-919X.2008.00845.x. hdl:11336/81744.
Tarboton, W.R. (1978). "Hunting and the Energy Budget of the Black-Shouldered Kite". The Condor. 80 (1): 88–91. doi:10.2307/1367793. JSTOR1367793.
nih.gov
pubmed.ncbi.nlm.nih.gov
Negro, Juan J.; Bortolotti, Gary R.; Mateo, Rafael; García, Isabel M. (2009). "Porphyrins and pheomelanins contribute to the reddish juvenal plumage of black-shouldered kites". Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology. 153 (3): 296–299. doi:10.1016/j.cbpb.2009.03.013. PMID19351566.
Bed'Hom, Bertrand; Coullin, Philippe; Guillier-Gencik, Zuzana; Moulin, Sibyle; Bernheim, Alain; Volobouev, Vitaly (1 April 2003). "Characterization of the atypical karyotype of the black-winged kite Elanus caeruleus (Falconiformes: Accipitridae) by means of classical and molecular cytogenetic techniques". Chromosome Research. 11 (4): 335–343. doi:10.1023/a:1024091923939. ISSN0967-3849. PMID12906130. S2CID13145368.
Negro, Juan J.; Pertoldi, Cino; Randi, Ettore; Ferrero, Juan J.; López-Caballero, José M.; Rivera, Domingo; Korpimäki, Erkki; Boal, Clint (1 September 2006). "Convergent evolution of Elanus kites and the owls". Journal of Raptor Research. 40 (3): 222–225. doi:10.3356/0892-1016(2006)40[222:ceoeka]2.0.co;2. hdl:10261/33813. ISSN0892-1016. S2CID85004744.
Bed'Hom, Bertrand; Coullin, Philippe; Guillier-Gencik, Zuzana; Moulin, Sibyle; Bernheim, Alain; Volobouev, Vitaly (1 April 2003). "Characterization of the atypical karyotype of the black-winged kite Elanus caeruleus (Falconiformes: Accipitridae) by means of classical and molecular cytogenetic techniques". Chromosome Research. 11 (4): 335–343. doi:10.1023/a:1024091923939. ISSN0967-3849. PMID12906130. S2CID13145368.
Negro, Juan J.; Pertoldi, Cino; Randi, Ettore; Ferrero, Juan J.; López-Caballero, José M.; Rivera, Domingo; Korpimäki, Erkki; Boal, Clint (1 September 2006). "Convergent evolution of Elanus kites and the owls". Journal of Raptor Research. 40 (3): 222–225. doi:10.3356/0892-1016(2006)40[222:ceoeka]2.0.co;2. hdl:10261/33813. ISSN0892-1016. S2CID85004744.
Bed'Hom, Bertrand; Coullin, Philippe; Guillier-Gencik, Zuzana; Moulin, Sibyle; Bernheim, Alain; Volobouev, Vitaly (1 April 2003). "Characterization of the atypical karyotype of the black-winged kite Elanus caeruleus (Falconiformes: Accipitridae) by means of classical and molecular cytogenetic techniques". Chromosome Research. 11 (4): 335–343. doi:10.1023/a:1024091923939. ISSN0967-3849. PMID12906130. S2CID13145368.
Clay., Theresa (1 March 1958). "Three New Species of Degeeriella Neumann (mallophaga) from the Falconiformes (aves)". Proceedings of the Royal Entomological Society of London B. 27 (1–2): 1–7. doi:10.1111/j.1365-3113.1958.tb01512.x. ISSN1365-3113.