Melody W. Young, Edwin Dickinson, Nicholas D. Flaim and Michael C. Granatosky (2022). Overcoming a ‘forbidden phenotype’: the parrot’s head supports, propels and powers tripedal locomotion, Proceedings of the Royal Society B: Biological Sciences, 20220245, https://doi.org/10.1098/rspb.2022.0245نسخة محفوظة 2022-10-26 على موقع واي باك مشين.
Waterhouse، D. M. (2006). "Parrots in a nutshell: The fossil record of Psittaciformes (Aves)". Historical Biology. ج. 18 ع. 2: 227–238. DOI:10.1080/08912960600641224. S2CID:83664072.
elsevier.com
linkinghub.elsevier.com
Berkunsky, I.; Quillfeldt, P.; Brightsmith, D.J.; Abbud, M.C.; Aguilar, J.M.R.E.; Alemán-Zelaya, U.; Aramburú, R.M.; Arce Arias, A.; Balas McNab, R.; Balsby, T.J.S.; Barredo Barberena, J.M.; Beissinger, S.R.; Rosales, M.; Berg, K.S.; Bianchi, C.A. (2017). "Current threats faced by Neotropical parrot populations". Biological Conservation (بالإنجليزية). 214: 278–287. DOI:10.1016/j.biocon.2017.08.016. Archived from the original on 2023-01-19.
Ball، V. (1889). "Further Notes on the Identification of the Animals and Plants of India, Which Were Known to Early Greek Authors". Proceedings of the Royal Irish Academy. ج. 1: 1–9. JSTOR:20503820.
Waterhouse، D. M. (2006). "Parrots in a nutshell: The fossil record of Psittaciformes (Aves)". Historical Biology. ج. 18 ع. 2: 227–238. DOI:10.1080/08912960600641224. S2CID:83664072.
Melody W. Young, Edwin Dickinson, Nicholas D. Flaim and Michael C. Granatosky (2022). Overcoming a ‘forbidden phenotype’: the parrot’s head supports, propels and powers tripedal locomotion, Proceedings of the Royal Society B: Biological Sciences, 20220245, https://doi.org/10.1098/rspb.2022.0245نسخة محفوظة 2022-10-26 على موقع واي باك مشين.