|Rufous-vented chachalaca, Ortalis ruficauda|
12-15 (extant), see text.
Chachalacas are galliform birds from the genus Ortalis. These birds are found in wooded habitats in the far southern United States (Texas), Mexico, and Central and South America. They are social, can be very noisy and often remain fairly common even near humans, as their relatively small size makes them less desirable to hunters than their larger relatives. As agricultural pests, they have a ravenous appetite for tomatoes, melons, beans, and radishes and can ravage a small garden in short order. They travel in packs of six to twelve. They somewhat resemble the guans, and the two have commonly been placed in a subfamily together, though the chachalacas are probably closer to the curassows.
Mitochondrial and nuclear DNA sequence data tentatively suggest that the chachalacas emerged as a distinct lineage during the Oligocene, somewhere around 40–20 mya, possibly being the first lineage of modern cracids to evolve; this does agree with the known fossil record – including indeterminate, cracid-like birds – which very cautiously favors a north-to-south expansion of the family.
|Image||Scientific name||Common Name||Distribution|
|Plain chachalaca||Ortalis vetula||Mexico, the Yucatán Peninsula, Belize, northern Guatemala, northern Honduras and just into the north central part of Nicaragua|
|Grey-headed chachalaca||Ortalis cinereiceps||eastern Honduras to northwestern Colombia (from South Chocó to the upper Atrato)|
|Chestnut-winged chachalaca||Ortalis garrula||Colombia|
|Rufous-vented chachalaca||Ortalis ruficauda||northeast Colombia and northern Venezuela|
|Rufous-headed chachalaca||Ortalis erythroptera||Colombia and adjacent Ecuador and Peru|
|Rufous-bellied chachalaca||Ortalis wagleri||Mexico|
|West Mexican chachalaca||Ortalis poliocephala||Mexico, from Jalisco to Oaxaca|
|Chaco chachalaca||Ortalis canicollis||Argentina, Bolivia, Brazil, Paraguay, and Uruguay|
|White-bellied chachalaca||Ortalis leucogastra||Costa Rica, El Salvador, Guatemala, Honduras, Mexico, and Nicaragua|
|Colombian chachalaca||Ortalis columbiana||Colombia.|
|Speckled chachalaca||Ortalis guttata||western Amazon Basin.|
|East Brazilian chachalaca||Ortalis araucuan||Atlantic forests in eastern Brazil|
|Scaled chachalaca||Ortalis squamata||southeastern Brazil.|
|Little chachalaca||Ortalis motmot||northern Brazil, French Guiana, Suriname, Guyana and Venezuela|
|Chestnut-headed chachalaca||Ortalis ruficeps||north central Brazil.|
|Buff-browed chachalaca||Ortalis superciliaris||Brazil.|
The cracids have a very poor fossil record, essentially being limited to a few chachalacas. The prehistoric species of the present genus, however, indicate that chachalacas most likely evolved in North or northern Central America:
- Ortalis tantala (Early Miocene of Nebraska, USA)
- Ortalis pollicaris (Flint Hill Middle Miocene of South Dakota, USA)
- Ortalis affinis (Ogallala Early Pliocene of Trego County, Kansas, USA)
- Ortalis phengites (Snake Creek Early Pliocene of Sioux County, Nebraska, USA)
- Marion, Wayne R. (September 1974). "Status of the Plain Chachalaca in South Texas". The Wilson Bulletin. 86 (3): 200–205. JSTOR 4160499.
- Sherr, Evelyn B. (2015). Marsh Mud and Mummichogs: An Intimate Natural History of Coastal Georgia. U. Of Georgia Press. p. 96. Archived from the original on 2015-07-23. In the 1920s Howard E. Coffin introduced a breeding population of chachalacas to Sapelo Island, and this breeding population still exists.
- "Gray-headed Chachalaca". neotropical.birds.cornell.edu/Species-Account/nb/home. Retrieved January 28, 2018.
- Pereira, S. #X. R. L.; Baker, A. J.; Wajntal, A. (2002). "Combined Nuclear and Mitochondrial DNA Sequences Resolve Generic Relationships within the Cracidae (Galliformes, Aves)". Systematic Biology. 51 (6): 946–58. doi:10.1080/10635150290102519. PMID 12554460. Free version Archived 2016-04-11 at the Wayback Machine
- Waue, Roland H. (1999). Heralds of Spring in Texas. Texas A&M University Press. p. 18. ISBN 9780890968796. Archived from the original on 2017-11-27.
- Arnott, William Geoffrey (2007). Birds in the Ancient World from A to Z. Routledge. p. 235. ISBN 978-0-415-23851-9. Archived from the original on 2014-06-11.
- Leopold, Aldo Starker (1972). Wildlife of Mexico: the Game birds and Mammals. University of California Press. p. 212. ISBN 978-0-520-00724-6.
- Wetmore, Alexander. 1923. Avian Fossils from the Miocene and Pliocene of Nebraska. Bulletin American Museum of Natural History XLVIII pp. 483-457.Web access
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