Cracidae

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Cracidae
Temporal range: Oligocene to recent
Crax daubentoni -Philadelphia Zoo -female-8a-4c.jpg
Yellow-knobbed curassow (Crax daubentoni)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Order: Galliformes
Family: Cracidae
Rafinesque, 1815
Subfamilies

The chachalacas, guans and curassows are birds in the family Cracidae. These are species of tropical and subtropical Central and South America. The range of one species, the plain chachalaca, just reaches southernmost parts of Texas in the United States. Two species, the Trinidad piping guan and the rufous-vented chachalaca occur on the islands of Trinidad and Tobago respectively.

Contents

Systematics and evolution

The family Cracidae was introduced (as Craxia) by the French polymath Constantine Samuel Rafinesque in 1815. [1] [2] The Cracidae are an ancient group related to the Australasian mound-builders. They are sometimes united with these in a distinct order, "Craciformes", but this is not supported by more recent research which suggests that either is a well-marked, basal lineage of Galliformes. [ which? ]

Phylogeny

Cladogram based on the study by De Chen and collaborators published in 2021. [3] The numbers of species are from the list maintained by Frank Gill, Pamela Rasmussen and David Donsker on behalf of the International Ornithologists' Union. [4]

Cracidae

Penelopina – highland guan Central Atlas fur zoologische Garten (Taf. 273b) (6436435841) (cropped).jpg

Chamaepetes – guans (2 species)

Penelope – guans (16 species) Avium Species Novae (Penelope jacquacu).jpg

Aburria – wattled guan

Pipile – piping guans (5 species)

Oreophasis – horned guan Oreophasis Gray white background.jpg

Ortalis – chachalacas (16 species) Avium Species Novae (Ortalis guttata).jpg

Crax – curassows (7 species) CraxAlbertiMWolf flipped.jpg

Pauxi – curassows (3 species) Hocco a pierre.jpg

Mitu – curassows (4 species) Mitu mitu white background.jpg

Nothocrax – nocturnal curassow Avium Species Novae (Nothocrax urumutum).jpg

Classification

Extinct species assignment follows the Mikko's Phylogeny Archive [5] and Paleofile.com websites. [6]

Alternatively, all subfamilies except the Penelopinae could be lumped into the Cracinae. As the initial radiation of cracids is not well resolved at present (see below), the system used here seems more appropriate. It is also quite probable that entirely extinct subfamilies exist as the fossil record is utterly incomplete.

Evolution

Spix's guan, Penelope jacquacu. Penelope jacquacu - Spix-Guan - Spix's Guan.jpg
Spix's guan, Penelope jacquacu.

Recent research has analyzed mt and nDNA sequences, morphological, and biogeographical data to study the phylogenetic relationships of cracid birds, namely the relationships among the genera (Pereira et al., 2002), the relationships between the species of curassows (Pereira & Baker, 2004) and between the piping- and wattled guans (Grau et al., 2005). The traditional groups—chachalacas, guans, and curassows—are verified as distinct clades, but the horned guan represents the sole survivor of a very distinct and ancient lineage.

In addition, the molecular data suggest that the Cracidae originated in the Late Cretaceous, but the authors caution that this cannot be more than a hypothesis at present: as the rate of molecular evolution is neither constant over time nor uniform between genera and even species, dating based on molecular information has a very low accuracy over such long timespans and needs to be corroborated by fossil evidence. The fossil record of cracids is limited to a single doubtfully distinct genus of chachalaca, Boreortalis (Hawthorn Early Miocene of Florida, USA; may actually be a junior synonym of Ortalis) and some species in the modern genus Ortalis , however. This does not provide any assistance in evaluating the hypothesis (Pereira et al., 2002) that the split between the 4 main lineages of our time occurred quite rapidly, approximately in the Oligocene or slightly earlier, somewhere between 40 and 20 mya.

The genera Procrax and Palaeonossax are often considered cracids, but this is not certain at all; they may belong to a related extinct lineage. It is unfortunate that of these too, few good fossils are known, as they date to about the time when the modern groups presumably diverged. Should they be cracids, they are not unlikely to represent either some of the last members of the family before guans, chachalacas, etc. evolved, or very early representatives of these lineages.

Thus, the assumption that the modern diversity started to evolve in the late Paleogene, continuing throughout the Miocene and onwards, must also be considered hypothetical given the lack of robust evidence. Still, the "molecular" scenario is entirely possible considering what is known about the evolution and radiation of the Galloanserae, and consistent with the paleogeography of the Americas. The ichnotaxon Tristraguloolithus cracioides is based on fossil eggshell fragments from the Late Cretaceous Oldman Formation of southern Alberta, Canada which are similar to chachalaca eggs (Zelenitsky et al., 1996), but in the absence of bone material their relationships cannot be determined except that they are apparently not from a dinosaur.

By comparison, speciation within curassows ( Crax , Nothocrax , Pauxi and Mitu ) and the piping/wattled guans is supported by better evidence. It was usually caused by changes in topography which divided populations (vicariant speciation), mainly due to the uplift of the Andes which led to the establishment of the modern river basins. The distribution of curassow and piping-guan species for the most part follows the layout of these river systems, and in the latter case, apparently many extinctions of populations in lowland areas (Grau et al., 2005). Another result was that the wattled guan belongs to the same genus as the piping-guans, which thus use the older name Aburria (Grau et al., 2005).

Originally interpreted as a turkey by Othniel Charles Marsh, Meleagris antiquus was referred to as Cracidae in 1964 by Pierce Brodkorb. It is nowadays considered unambiguously to be a Cariamiformes under Bathornithidae, and indeed a very different animal from cracids, being a 2 meter tall terrestrial predator. Similarly, Palaeophasianus has been reassigned to Geranoididae, a lineage of large, ostrich-like stem-cranes. [7]

Description

Bare-faced curassow (Crax fasciolata) Nacktgesichthokko Zoo Berlin 2.jpg
Bare-faced curassow (Crax fasciolata)

Cracids are large birds, similar in general appearance to turkeys. The guans and curassows live in trees, but the smaller chachalacas are found in more open scrubby habitats. Many species are fairly long tailed, which may be an aide to navigating their largely arboreal existence. They are generally dull-plumaged, but the curassows and some guans have colourful facial ornaments. The birds in this family are particularly vocal, with the chachalacas taking their name from the sound of their call. [8] Cracids range in size from the little chachalaca (Ortalis motmot), at as little as 38 cm (15 in) and 350 g (12 oz), to the great curassow (Crax rubra), at nearly 1 m (39 in) and 4.3 kg (9.5 lb).

Behaviour and ecology

These species feed on fruit, insects and worms. They build nests in trees, and lay two to three large white eggs, which only the female incubates alone. The young are precocial and are born with an instinct to immediately climb and seek refuge in the nesting tree. They are able to fly within days of hatching. [8]

Footnotes

  1. Rafinesque, Constantine Samuel (1815). Analyse de la nature ou, Tableau de l'univers et des corps organisés (in French). Palermo: Self-published. p. 69.
  2. Bock, Walter J. (1994). History and Nomenclature of Avian Family-Group Names. Bulletin of the American Museum of Natural History. Vol. Number 222. New York: American Museum of Natural History. pp. 135, 252. hdl:2246/830.
  3. Chen, D.; Hosner, P.A.; Dittmann, D.L.; O’Neill, J.P.; Birks, S.M.; Braun, E.L.; Kimball, R.T. (2021). "Divergence time estimation of Galliformes based on the best gene shopping scheme of ultraconserved elements". BMC Ecology and Evolution. 21 (1): 209. doi: 10.1186/s12862-021-01935-1 . PMC   8609756 . PMID   34809586.
  4. Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2021). "Pheasants, partridges, francolins". IOC World Bird List Version 11.2. International Ornithologists' Union. Retrieved 23 November 2021.
  5. Haaramo, Mikko (2007). "Aves [Avialae]– basal birds". Mikko's Phylogeny Archive. Retrieved 30 December 2015.
  6. "Taxonomic lists- Aves". Paleofile.com (net, info). Archived from the original on 11 January 2016. Retrieved 30 December 2015.
  7. Mayr, Gerald (2016). "On the taxonomy and osteology of the Early Eocene North American Geranoididae (Aves, Gruoidea)". Swiss Journal of Palaeontology. 135 (2): 315–325. doi:10.1007/s13358-016-0117-2. S2CID   87692869.
  8. 1 2 Rands, Michael R.W. (1991). Forshaw, Joseph (ed.). Encyclopaedia of Animals: Birds. London: Merehurst Press. p. 89. ISBN   1-85391-186-0.

Related Research Articles

<span class="mw-page-title-main">Galliformes</span> Order of heavy-bodied ground-feeding birds

Galliformes is an order of heavy-bodied ground-feeding birds that includes turkeys, chickens, quail, and other landfowl. Gallinaceous birds, as they are called, are important in their ecosystems as seed dispersers and predators, and are often reared by humans for their meat and eggs, or hunted as game birds.

<span class="mw-page-title-main">Curassow</span> Subfamily of birds

Curassows are one of the three major groups of cracid birds. They comprise the largest-bodied species of the cracid family. Three of the four genera are restricted to tropical South America; a single species of Crax ranges north to Mexico. They form a distinct clade which is usually classified as the subfamily Cracinae.

<span class="mw-page-title-main">Trinidad piping guan</span> Species of bird

The Trinidad piping guan locally known as the pawi, is a bird in the chachalaca, guan and curassow family Cracidae, endemic to the island of Trinidad. It is a large bird, somewhat resembling a turkey in appearance, and research has shown that its nearest living relative is the blue-throated piping guan from South America. It is a mainly arboreal species feeding mostly on fruit, but also on flowers and leaves. At one time abundant, it has declined in numbers and been extirpated from much of its natural range and the International Union for Conservation of Nature has rated the bird as "critically endangered".

<i>Crax</i> Genus of birds

Crax is a genus of curassows in the order Galliformes, a clade of large, heavy-bodied, ground-feeding birds. They are known from tropical South America with one species, the great curassow, ranging northwards through Central America as far as Mexico. The curassows in this genus are noted for their sexual dimorphism; males are more boldly coloured than females and have facial ornamentation such as knobs and wattles. They are also characterised by curly crests and contrastingly-coloured crissa. Crax curassows probably originated as a distinct lineage during the Late Miocene. During the Messinian, the ancestral Crax split into two lineages separated by the Colombian Andes and the Cordillera de Mérida which uplifted at that time. The northern lineage radiated into the great, blue-billed, and yellow-knobbed curassows, while the four southern species evolved as they became separated by the uplifting of various mountain ranges.

<span class="mw-page-title-main">Piping guan</span> Genus of birds

The piping guans are a bird genus, Pipile, in the family Cracidae. A recent study, evaluating mtDNA, osteology and biogeography data concluding that the wattled guan belongs in the same genus as these and is a hypermelanistic piping guan. Thus, Pipile became a junior synonym of Aburria, though this conclusion was not accepted by the South American Checklist Committee, or evaluated by the IOC, so the classification remains in Pipile.

<span class="mw-page-title-main">Guan (bird)</span> Subfamily of birds

The guans are a number of bird genera which make up the largest group in the family Cracidae. They are found mainly in northern South America, southern Central America, and a few adjacent Caribbean islands. There is also the peculiar horned guan which is not a true guan, but a very distinct and ancient cracid with no close living relatives.

<span class="mw-page-title-main">Black-fronted piping guan</span> Species of bird

The black-fronted piping guan or jacutinga in Brazilian Portuguese is a bird in the chachalaca, guan, and curassow family Cracidae. It is found in Argentina, Brazil, and Paraguay.

<span class="mw-page-title-main">Great curassow</span> Species of bird

The great curassow is a large, pheasant-like bird from the Neotropical rainforests, its range extending from eastern Mexico, through Central America to western Colombia and northwestern Ecuador. Male birds are black with curly crests and yellow beaks; females come in three colour morphs, barred, rufous and black. These birds form small groups, foraging mainly on the ground for fruits and arthropods, and the occasional small vertebrate, but they roost and nest in trees. This species is monogamous, the male usually building the rather small nest of leaves in which two eggs are laid. This species is threatened by loss of habitat and hunting, and the International Union for Conservation of Nature has rated its conservation status as "vulnerable".

<i>Pauxi</i> Genus of birds

The genus Pauxi consists of the three species of helmeted curassows, terrestrial black fowl with ornamental casque on their heads. All are found in South America.

<span class="mw-page-title-main">Alagoas curassow</span> Species of bird

The Alagoas curassow is a glossy-black, pheasant-like bird. It was formerly found in forests in Northeastern Brazil in what is now the states of Pernambuco and Alagoas, which is the origin of its common name. It is now extinct in the wild; there are about 130 individuals in captivity.

<span class="mw-page-title-main">Wattled curassow</span> Species of bird

The wattled curassow is a threatened member of the family Cracidae, the curassows, guans, and chachalacas. It is found in remote rainforests in the western Amazon basin in South America. Males have black plumage, except for a white crissum, with curly feathers on the head and red bill ornaments and wattles. Females and juveniles are similar but lack the bill ornamentation and have a reddish-buff crissum area. The wattled curassow is the most ancient lineage of the southern Crax curassows. In captivity, it sometimes hybridises with the blue-billed curassow.

<span class="mw-page-title-main">Chachalaca</span> Genus of birds

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.

<span class="mw-page-title-main">Horned guan</span> Species of bird

The horned guan is a large, turkey-like bird native to Central America. It is the only species in the genus Oreophasis.

<i>Penelope</i> (bird) Genus of birds

Penelope is a bird genus in the family Cracidae consisting of a number of large turkey-like arboreal species, the typical guans. The range of these species is in forests from southern Mexico to tropical South America. These large birds have predominantly brown plumage and have relatively small heads when compared to the size of their bodies; they also bear a characteristic dewlap. Body lengths are typically 65 to 95 centimeters.

<span class="mw-page-title-main">Black curassow</span> Species of bird

The black curassow, also known as the smooth-billed curassow and the crested curassow, is a species of bird in the family Cracidae, the chachalacas, guans, and curassows. It is found in humid forests in northern South America in Colombia, Venezuela, the Guianas including Suriname, and far northern Brazil, and is introduced to Bahamas, Cuba, Jamaica, Haiti, Dominican Republic, Puerto Rico and Lesser Antilles. It is the only Crax curassow where the male and female cannot be separated by plumage, as both are essentially black with a white crissum, and have a yellow or orange-red cere.

<span class="mw-page-title-main">Bare-faced curassow</span> Species of bird

The bare-faced curassow is a species of bird in the family Cracidae, the chachalacas, guans, curassows, etc. It is found in Brazil, Paraguay, and eastern Bolivia, and extreme northeast Argentina, in the cerrado, pantanal, and the southeastern region of the Amazon basin. Its natural habitats are subtropical or tropical dry forest and subtropical or tropical moist lowland forest.

<span class="mw-page-title-main">Horned curassow</span> Species of bird

The horned curassow, or southern helmeted curassow, is a species of bird in the family Cracidae found in humid tropical and subtropical forests. It was first described by James Bond and Rodolphe Meyer de Schauensee in 1939 from a specimen collected in Bolivia, and further birds that were described from Peru in 1971 were thought to be a new subspecies. However, the taxonomical position of the birds found in Peru in 1971 is unclear. The horned curassow as originally described is endemic to Bolivia. It is a large, predominantly black bird with a distinctive casque on its forehead. It is an uncommon bird with a limited range and is suffering from habitat loss, and the International Union for Conservation of Nature has rated its conservation status as being "critically endangered".

<span class="mw-page-title-main">Red-throated piping guan</span> Species of bird

The red-throated piping guan is a species of bird in the chachalaca, guan, and curassow family Cracidae. It is found in Bolivia and Brazil.

<span class="mw-page-title-main">Sira curassow</span> Species of bird

The Sira curassow is a species of bird in the family Cracidae. It is found in the Cerros del Sira in central Peru. Its natural habitat is tropical, moist, montane cloud forest.

References