Nombre en español: Picochato de Pelzeln

Nombre en inglés: Pelzeln’s Tody-Tyrant

Nombre científico: Hemitriccus inornatus

Familia: Tyrannidae

Categorías: Hipotéticas

Distribución y hábitat

El titirijí de Pelzeln o mosqueta de Pelzeln (Hemitriccus inornatus) es una especie de ave paseriforme de la familia Tyrannidae perteneciente al numeroso género Hemitriccus. Es nativo del norte de América del Sur.

Se distribuye localmente en el río Negro y sus tributarios y recientemente también registrada en Roraima (en el río Branco) y Pará, en el norte de Brasil, y en el centro de Surinam; probablemente también se encuentre en las adyacencias de Venezuela y Colombia.​

Esta especie es considerada muy local, pero aparentemente puede ser común en su hábitat natural correcto: los bosques de arenas blancas, que van de altos a enanos, distribuidos fragmentadamente, denominados campinas, por debajo de los 200 m de altitud.

​Hipotética para Colombia

Los registros más cercanos de Colombia son en el Amazonas en Venezuela y en Brasil en el año 2023

Sistemática

Descripción original

La especie H. inornatus fue descrita por primera vez por el ornitólogo austríaco August von Pelzeln en 1868 bajo el nombre científico Euscarthmus inornatus; la localidad tipo es: «Río Içana, margen derecha del alto Río Negro, noroeste de Brasil.»​

Etimología

El nombre genérico masculino «Hemitriccus» se compone de las palabras del griego « ἡμι hēmi» que significa ‘pequeño’, y « τρικκος trikkos»: pequeño pájaro no identificado; en ornitología, «triccus» significa «atrapamoscas tirano»; y el nombre de la especie «inornatus», proviene del latín ysignifica ‘liso, sin adornos’.​

Taxonomía

Anteriormente estuvo situada en el género Euscarthmornis y más recientemente, en Idioptilon, ambos ahora obsoletos. También anteriormente fue considerada una subespecie de Hemitriccus margaritaceiventer; puede ser más próxima a H. minimus. Es monotípica.

​Pelzeln’s tody-tyrant

Pelzeln’s tody-tyrant (Hemitriccus inornatus) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Brazil, Suriname, and Venezuela.

Taxonomy and systematics

Pelzeln’s tody-tyrant had a complicated taxonomic history from its original description in 1868 to late in the twentieth century. It was described as Euscarthmus inornatus. It was later moved to the genus Idioptilon, and later still both Euscarthmus and Idioptilon were merged into Hemitriccus. It was for a time treated as a subspecies of the pearly-vented tody-tyrant (H. margaritaceiventer).

The type specimen of Pelzeln’s tody-tyrant had been collected almost 40 years before Pelzeln formally described it in 1868. The species was not seen again until 1992.

Pelzeln’s tody-tyrant is monotypic.

Description

Pelzeln’s tody-tyrant is about 9 cm (3.5 in) long and weighs 7.7 to 9 g (0.27 to 0.32 oz). The sexes have the same plumage. Adults have a brownish olive crown. Their lores and a thin eye-ring are whitish on an otherwise brownish olive face. Their back and rump are brownish olive. Their wings are dusky olive-brown with whitish edges on the flight feathers and tips of the coverts; the latter show as two narrow wing bars. Their tail is dusky olive-brown. Their throat and underparts are mostly white with some faint grayish streaking. They have a whitish to pale gray iris, a gray bill, and gray legs and feet.

Distribution and habitat

Sources differ on the range of Pelzeln’s tody-tyrant. The International Ornithologists’ Union and the Clements taxonomy list it as occurring only in Brazil. BirdLife International adds Suriname. The map in van Perlo’s Field Guide to the Birds of Brazil shows the species on the Brazil/Venezuela border and the author does not state that the species is endemic to Brazil; Hilty’s Birds of Venezuela states that it may occur in the southern part of the country. The Cornell Lab of Ornithology’s Birds of the World places it in Brazil and «probably also in adjacent Venezuela and Colombia». The South American Classification Committee of the American Ornithological Society has documented records in all three of Brazil, Suriname, and Venezuela.^[3] All of the sources that provide detail agree that it is present in scattered sites along the Negro River and its tributaries, and Cornell and BirdLife International add sites in Brazil’s Roraima and Pará states.

Pelzeln’s tody-tyrant inhabits woodlands on campinarana white-sand soils. Trees there are typically stunted but may grow tall.

Behavior

Movement

Pelzeln’s tody-tyrant is believed to be a year-round resident.^[6]

Feeding

The diet and foraging technique of Pelzeln’s tody-tyrant are not well known. It typically forages in the canopy and subcanopy. It is thought to mostly take prey like other members of its genus, using short upward sallies from a perch to grab it from the underside of leaves.

Breeding

Nothing is known about the breeding biology of Pelzeln’s tody-tyrant.

Vocalization

The song of Pelzeln’s tody-tyrant is a «rather low, modest series of 7-10 well-separated notes, rising at the end and accelerating to a short, upslurred trill».

Status

The IUCN has assessed Pelzeln’s tody-tyrant as being of Least Concern. Its population size is not known and is believed to be decreasing. No immediate threats have been identified. It is known only from widely scattered locations within its nominally large range. «Much of its habitat remains in relatively pristine condition owing to low human population density and inaccessibility, but cattle grazing, extraction of white sands, gold-mining and diamond-mining, and frequent fires pose serious local threats.»

Fuentes: Wikipedia/eBird/xeno-canto