在洪都拉斯北部的群落,其頭部、頸部及冠的黃毛羽毛各有不同,但淡色的喙及雛鳥的羽毛都較接近雙黃頭亞馬遜鸚鵡。這使得分類的情況更為複雜。[2][5]於1997年,在此處發現了雙黃頭亞馬遜鸚鵡的亞種A. o. hondurensis。[6]而在海灣群島黃頸亞馬遜鸚鵡的亞種A. auropalliata caribaea與這個亞種似乎相對接近,兩者都有較淡色的下頜,顯示牠們之間有著基因流。[7]若然確定,牠們有可能是同一物種。另外,黃頸亞馬遜鸚鵡的兩個亞種A. a. caribaea及A. a. parvipes比其指名亞種更接近雙黃頭亞馬遜鸚鵡,肩膀上都有紅色的羽毛。[2][5]另外,飼養下的這些物種都有混種,而DNA的系統發生學分析並不支持分裂為不同的物種。[8]
^ 2.02.12.22.32.42.52.6Steve N. G. Howell and Sophie Webb. A Guide to the Birds of Mexico and Northern Central America. Oxford University Press. 1995. ISBN 0-19-854012-4.
^Binford, L. A distributional survey of the birds of the Mexican state of Oaxaca. Orn. Monographs. 1989, 43: 1–418.
^Monroe, B., JR., & T. Howell. 1966. Geographic variation in Middle American parrots of the Amazona ochrocephala complex. Occasional Papers of the Museum of Zoology, no. 34. Louisiana State University, Baton Rouge.
^ 5.05.1Lousada, S., & S. Howell. Distribution, variation, and conservation of Yellow-headed Parrots in northern Central America. Cotinga. 1996, 5: 46–53.
^Lousada, S., & S. Howell. Amazona oratrix hondurensis: A new subspecies of parrot from the Sula Valley of northern Honduras. Bull. BOC. 1997, 117: 203–223.
^Lousada, S. Amazona auropalliata caribaea: A new subspecies of parrot from the Bay Islands, northern Honduras. Bull. BOC. 1989, 109: 232–235.
^Eberhard, J., & E. Bermingham. Phylogeny and Biogeography of the Amazona ochrocephala (Aves: Psittacidae) Complex. Auk. 2004, 121 (2): 318–332.
^ 9.09.19.2Juniper, T., & M. Parr. A Guide to the Parrots of the World. East Sussex: Pica Press. 1998. ISBN 1-873403-40-2.
^Clements, J. The Clements Checklist of the Birds of the World. Christopher Helm. 2007. ISBN 9780713686951.