Corvida may have evolved in New Guinea/Australia; their diversity increased in the Eocene or Oligocene in the New Guinea archipelago, and eventually migrated to Asia and the rest of the world (Jønsson, et al. 2011; Aggerbeck, et al. 2014).
Members of Corvida are cosmopolitan except for southern South America, some islands and Antarctica; they are found from Australia and New Zealand to the United States and Canada, to South America, Africa, Europe and Asia.
Mohouidae is only found in New Zealand.Whistlers are endemic to Australasia (from India to Australia and New Guinea).
^Jønsson, K.A., P.-H. Fabrea, R.E. Ricklefs,, and J. Fjeldså (2011b), Major global radiation of corvoid birds originated in the proto-Papuan archipelago, Proc. Natl. Acad. Sci. 108, 2328-2333.
^Aggerbeck, M., J. Fjeldså, L. Christidis, P.-H. Fabre, K.A. Jønsson (2014), Resolving deep lineage divergences in core corvoid passerine birds supports a proto-Papuan island origin, Mol. Phylogenet. Evol. 70, 272-285.
^Peterson, Roger Tory (1980). A Field Guide to the Birds East of the Rockies. Houghton Mifflin Company. ISBN039526619X.
^Simpson & Day (1999). A Field Guide to the Birds of Australia, 6th Edition. Penguin. ISBN0-691-04995-5.
^ abPerlo, Ber van (2011). Birds of New Zealand, Hawaii, and the Central and West Pacific. HarperCollins. ISBN9780007287383.
^Frances, Peter; et al. (2007). Bird: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN1564582957. CS1 maint: Explicit use of et al. (link)
This article is part of Project Bird Taxonomy, a All Birds project that aims to write comprehensive articles on every order, family and other taxonomic rank related to birds.