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Crouch, N. M. A. (2022). "Interpreting the fossil record and the origination of birds". bioRxiv. doi:10.1101/2022.05.19.492716.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
Weir, Jason T.; Schluter, D (2007). "The Latitudinal Gradient in Recent Speciation and Extinction Rates of Birds and Mammals". Science. 315 (5818): 1574–76. doi:10.1126/science.1135590. ISSN0036-8075. PMID17363673.Parameter |month= yang tidak diketahui akan diabaikan (bantuan)
Arendt, Wayne J. (1 January 1988). "Range Expansion of the Cattle Egret, (Bubulcus ibis) in the Greater Caribbean Basin". Colonial Waterbirds. 11 (2): 252–62. doi:10.2307/1521007. ISSN0738-6028. JSTOR1521007.
Gary Stiles, F. (1981). "Geographical Aspects of Bird-Flower Coevolution, with Particular Reference to Central America". Annals of the Missouri Botanical Garden. 68 (2): 323–51. doi:10.2307/2398801. JSTOR2398801.
Arendt, Wayne J. (1 January 1988). "Range Expansion of the Cattle Egret, (Bubulcus ibis) in the Greater Caribbean Basin". Colonial Waterbirds. 11 (2): 252–62. doi:10.2307/1521007. ISSN0738-6028. JSTOR1521007.
Gary Stiles, F. (1981). "Geographical Aspects of Bird-Flower Coevolution, with Particular Reference to Central America". Annals of the Missouri Botanical Garden. 68 (2): 323–51. doi:10.2307/2398801. JSTOR2398801.
Yonezawa, T.; et al. (2017). "Phylogenomics and Morphology of Extinct Paleognaths Reveal the Origin and Evolution of the Ratites". Current Biology. 27 (1): 68–77. doi:10.1016/j.cub.2016.10.029. PMID27989673.
Weir, Jason T.; Schluter, D (2007). "The Latitudinal Gradient in Recent Speciation and Extinction Rates of Birds and Mammals". Science. 315 (5818): 1574–76. doi:10.1126/science.1135590. ISSN0036-8075. PMID17363673.Parameter |month= yang tidak diketahui akan diabaikan (bantuan)
Weir, Jason T.; Schluter, D (2007). "The Latitudinal Gradient in Recent Speciation and Extinction Rates of Birds and Mammals". Science. 315 (5818): 1574–76. doi:10.1126/science.1135590. ISSN0036-8075. PMID17363673.Parameter |month= yang tidak diketahui akan diabaikan (bantuan)
Arendt, Wayne J. (1 January 1988). "Range Expansion of the Cattle Egret, (Bubulcus ibis) in the Greater Caribbean Basin". Colonial Waterbirds. 11 (2): 252–62. doi:10.2307/1521007. ISSN0738-6028. JSTOR1521007.