The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• 2010. Bird bones may be hollow, but they are also heavy. Science Daily [Internet],
• Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
• Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79
• Barker, F. K., A. Cibois, P. Schikler, J. Feinstein, and J. Cracraft. 2004. Phylogeny and diversification of the largest avian radiation. Proc. Natl. Acad. Sci. USA 101:11040-11045.
• Barker, F. K., G. F. Barrowclough, and J. G. Groth. 2002. A phylogenetic hypothesis for passerine birds; Taxonomic and biogeographic implications of an analysis of nuclear DNA sequence data. Proc. R. Soc. Lond. B 269:295-308.
• Chesser, R. T. 2004. Molecular systematics of New World suboscine birds. Mol. Phylogen. Evol. 32:11-24.
• Dumont ER. 2010. Bone density and the lightweight skeletons of birds. Proc. R. Soc. B.
• Ericson, P. G. P., D. Zuccon, J. I. Ohlson, U. S. Johansson, H. Alvarenga, and R. O. Prum. 2006. Higher level phylogeny and morphological evolution of tyrant flycatchers, cotingas, manakins and their allies (Aves: Tyrannida). Molecular Phylogenetics and Evolution 40:471–483.
• Foy, Sally; Oxford Scientific Films. 1982. The Grand Design: Form and Colour in Animals. Lingfield, Surrey, U.K.: BLA Publishing Limited for J.M.Dent & Sons Ltd, Aldine House, London. 238 p.
• Johansson, U. S., M. Irestedt, T. J. Parsons, and P. G. P. Ericson. 2002. Basal phylogeny of the Tyrannoidea based on comparisons of cytochrome b and exons of nuclear c-myc and RAG-1 genes. Auk 119:984-995.
• Lanyon, S.M. 1985. Molecular perspective on higher-level relationships in the Tyrannoidea (Aves). Systematic Zoology 34:404–18.
• Ohlson, J. I., R. O. Prum, and P. G. P. Ericson. 2007. A molecular phylogeny of the cotingas (Aves : Cotingidae). Molecular Phylogenetic and Evolution 42(1):25-37.
• Prum, R. O. 1990. A test of the monophyly of the manakins (Pipridae) and of the cotingas (Cotingidae) based on morphology. Occasional Papers of The Museum of Zoology, The University of Michigan 723:1–44.
• Ridgely, R. S. and G. Tudor. 1994. The Birds of South America. Volume 2. The Suboscine Passerines. University of Texas, Austin.