Nombre en español: Tinamú Grande

Nombre en ingles: Great Tinamou

Nombre científico: Tinamus major

Familia: Tinamidae

Foto: Nick Athanas

Canto: Peter Boesman

El tinamú grande, tinamú mayor² o tinamú oliváceo³ (Tinamus major) es una especie de ave nativa de América Central y América del Sur, los tinámidos presentan aproximadamente 47 especies de la Familia Tinamidae. Tiene 43 centímetro de largo, 1100 gramos de peso y aproximadamente el tamaño y forma de un pavo pequeño. Es de coloración gris-castaño y está bien camuflado para el bosque selvático.

Es un especies poliándrica, y uno de los rasgos es el cuidado paternal masculino exclusivo. Una hembra se apareará con el macho y pondrá un promedio de cuatro huevos que él incuba hasta salir del cascarón. El macho cuida los polluelos durante aproximadamente 3 semanas antes de comenzar a seguir otro hembra. Mientras tanto la hembra pone huevos en nidos de otros machos. Ella puede poner en los nidos de cinco o seis machos durante cada estación de cría, que es de aproximadamente 8 meses, siendo muy larga la estación de postura, dejando al cuidado paternal los polluelos. Los huevos son de coloración azul, grandes, brillantes, los nidos tienen forma de tazas rudimentarios construidos en la base o raíces de un árbol.

Excepto cuando se aparea y la postura de los huevos, los tinamos son solitarios, vagando por la selva oscura, en busca de semillas, frutos, pequeños animales como insectos, arañas, ranas, lagartijas, en la hojarasca de la selva, que utiliza como alimento.

El tinamo grande tiene una llamada o canto muy distintivo, se puede escuchar en el atardecer de la selva e identificarlo por él. Hay varias subespecie, principalmente diferenciadas por su colorido.

Subespecies

T. m. robustus
T. m. percautus
T. m. fuscipennis
T. m. castaneiceps
T. m. brunneiventris
T. m. saturatus
T. m. latifrons
T. m. zuliensis
T. m. peruvianus
T. m. serratus
T. m. major
T. m. olivascens

Great tinamou

The great tinamou (Tinamus major) is a species of tinamou ground bird native to Central and South America. There are several subspecies, mostly differentiated by their coloration.

Description

Great tinamou are approximately 44 cm (17 in) long, 1.1 kg (2.4 lb) in weight and size and shape of a small turkey. It ranges from light to dark olive-green in color with a whitish throat and belly,^[ flanks barred black, and undertail cinnamon. Crown and neck rufous, occipital crest and supercilium blackish. Its legs are blue-grey in color. All these features enable great tinamou to be well-camouflaged in the rainforest understory.

The great tinamou has a distinctive call, three short, tremulous, but powerful piping notes which can be heard in its rainforest habitat in the early evenings.^[

Taxonomy

All tinamous are from the family Tinamidae, and are the closest living relatives of the ratites. Unlike ratites, tinamous can fly, although in general, they are not strong fliers. All ratites evolved from prehistoric flying birds.^[

There are twelve sub-species

T. m. percautus occurs in southeastern Mexico (Yucatan Peninsula), Belize, and Petén department in Guatemala.
T. m. robustus occurs in the lowlands of southeastern Mexico, Guatemala, and northern Nicaragua.
T. m. fuscipennis occurs in northern Nicaragua, Costa Rica, and western Panama.
T. m. castaneiceps occurs in southwestern Costa Rica and western Panama.
T. m. brunniventris occurs in south central Panama.
T. m. saturatus occurs on Pacific slope of eastern Panama and northwestern Colombia.
T. m. latifrons occurs in southwestern Colombia and western Ecuador.
T. m. zuliensis occurs in northeastern Colombia and northwestern Venezuela.
T. m. major occurs in eastern Venezuela, Guyana, Suriname, French Guiana and northeastern Brazil.
T. m. olivascens occurs in Brazilian Amazon.
T. m. peruvianus occurs in southeastern Colombia, eastern Ecuador, eastern Bolivia, western Brazil, and eastern Peru.
T. m. serratus occurs in extreme southern Venezuela and northwestern Brazil^[

Johann Friedrich Gmelin identified the great tinamou from a specimen located in Cayenne, French Guiana, in 1789.^[

Mating

The great tinamou is a polygynandrous species, and one that features exclusive male parental care. A female will mate with a male and lay an average of four eggs which he then incubates until hatching. He cares for the chicks for approximately 3 weeks before moving on to find another female. Meanwhile, the female has left clutches of eggs with other males. She may start nests with five or six males during each breeding season, leaving all parental care to the males. The breeding season is long, lasting from mid-winter to late summer. The eggs are large, shiny, and bright blue or violet in color, and the nests are usually rudimentary scrapings in the buttress roots of trees.^[

Except during mating, when a pair stay together until the eggs are laid, great tinamous are solitary and roam the dark understory alone, seeking seeds, fruit, and small animals such as insects, spiders, frogs and small lizards in the leaf litter. They are especially fond of Lauraceae, annonaceae, myrtaceae, sapotaceae.^[

Eggs, Collection Museum Wiesbaden

Habitat

Great tinamou lives in subtropical and tropical forest such as rainforest, lowland evergreen forest, river-edge forest, swamp forest and cloud forest at altitudes from 300 to 1,500 m (1,000–4,900 ft). Unlike some other tinamous, the great tinamou isn’t as affected by forest fragmentation. Its nest can be found at the base of a tree.

Conservation

This species is widespread throughout its large range (6,600,000 km² (2,500,000 sq mi)), and it was formerly evaluated as Least Concern on the IUCN Red List of Threatened Species. They are hunted with no major effect on their population.^[ In 2012 the species was reclassified as Near Threatened due to the predicted impact of continuing deforestation, given that its preferred habitat is undistubed forest.