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
• Boles, W. E. (1995). The world's oldest songbird. Nature 374, 21-22.
• Brown, J. L. (1987). Helping and Communal Breeding in Birds. In Monographs in Behavioral Ecolog. Princeton, N.J.: Princeton University Press.
• Cracraft, J. (1988). The major clades of birds. In The Phylogeny and Classification of the Tetrapods, Volume 1: Amphibians, Reptiles, Birds, vol. 35A (ed. M.J.Benton), pp. 339-361. Oxford: Clarendon Press.
• Diamond, J. (1986). Biology of birds of paradise and bowerbirds. Annual Review of Ecology and Systematics 17, 17-37.
• Dumbacher, J. P., Beehler, B. M., Spande, T. F., Garraffo, H. M. and Daly, J. W. (1992). Homobatrachotoxin in the genus Pitohui : chemical defence in birds? Science 258, 799-801.
• Dumont ER. 2010. Bone density and the lightweight skeletons of birds. Proc. R. Soc. B.
• Edwards, S. V. and Naeem, S. (1993). The phylogenetic component of cooperative breeding in perching birds. The American Naturalist 141, 754-789.
• Feduccia, A. (1995). Explosive radiation in Tertiary birds and mammals. Science 267, 637-638.
• 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.
• Gray, D. A. (1996). Carotenoids and sexual dichromatism in North American passerine birds. The American Naturalist 148, 453-480.
• Hackett, S. J., Kimball, R. T., Reddy, S., Bowie, R. C. K., Braun, E. L., Braun, M. J., Chojnowski, J. L., Cox, W. A., Han, K.-L., Harshman, J., Huddleston, C. J., Marks, B. D., Miglia, K. J., Moore, W. A., Sheldon, F. H.,
• J. M. Teal, Energy flow in the salt marsh ecosystem of Georgia, Ecology 43(4):614-624, from p. 616 (1962).
• Kroodsma, D. E. and Miller, E. H. (1996). Ecology and Evolution of Acoustic Communication in Birds. Ithaca, NY: Cornell University Press.
• Nee, S., Mooers, A., and Harvey, P. H. (1992). Tempo and mode of evolution revealed from molecular phylogenies. Proceedings of the National Academy of Sciences (USA) 89, 8322-8326.
• Olson, S. L. (1989). Aspects of global avifaunal dynamics during the Cenozoic. In Proceedings of the XIX International Ornithological Congress, vol. 29, pp. 2023-2029. Christchurch, New Zealand.
• Prum, R. O. (1994). Phylogenetic analysis of alternative social behavior in the manakins (Aves: Pipridae). Evolution 48, 1657-1665.
• R. F. Johnston, Predation by short-eared owls on a Salicornia salt marsh, Wilson Bull. 68(2):91-102, from p. 99 (1956).
• R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York
• R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 287 (1947).
• R. W. Dexter, The marine communities of a tidal inlet at Cape Ann, Massachusetts: a study in bio-ecology, Ecol. Monogr. 17:263-294, from p. 288 (1947).
• Raikow, R. J. (1982). Monophyly of the Passeriformes: test of a phylogenetic hypothesis. Auk 99, 431-455.
• Raikow, R. J. (1986). Why are there so many kinds of passerine birds? Systematic Zoology 35, 255-259.
• Sibley, C. G. and Ahlquist, J. E. (1990). Phylogeny and Classification of Birds. New Haven, CT: Yale University Press.
• Wilson, A. C. (1989). Time scale for bird evolution. Proceedings of the XIX International Ornithological Congress 19, 1912-1917.