Tecolotito Guatemalteco (Glaucidium cobanenese)

Tecolotito Guatemalteco Glaucidium cobanense

Análisis de las vocalizaciones del Tecolotito Guatemalteco (Glaucidium cobanense), endemic en las tierras altas del norte de Centro América y sur de México, apoya la separación específica de Glaucidium gnoma en las tierras altas de México al norte del Istmo de Tehuantepec. Dos artículos fueron publicados:

Eisermann, K. & S. N. G. Howell (2011). Vocalizations of the Guatemalan Pygmy-Owl (Glaucidium cobanense). Journal of Raptor Research 45: 304-314.

Abstract: The lowlands of the Isthmus of Tehuantepec separate the range of the Guatemalan Pygmy-Owl (Glaucidium cobanense), recognized as a species in modern owl taxonomy and resident in the highlands of southeastern Mexico, Guatemala, and Honduras, from the range of Mountain Pygmy-Owl (Glaucidium gnoma) in the Mexican highlands northwest of the isthmus. Here we document hitherto undescribed vocalizations of Guatemalan Pygmy-Owls in the Guatemala-Chiapas highlands. We recorded four different vocalization types of adults: (1) territorial toot calls, (2) whiwhiwhi calls given by the female during nest-site establishment, (3) soft toot calls of the male near the nest, and (4) copulation calls. The territorial toot calls of Guatemalan Pygmy-Owls differed from those of Mountain Pygmy-Owls in Mexico. The mean individual call rate of Guatemalan Pygmy-Owls was 3.4 ± 0.5 notes/sec (n = 49 call series of six individuals), significantly higher than in Mountain Pygmy-Owls (1.9 ± 0.3 notes/sec, n = 34 call series of eight individuals). This new evidence of vocal differences supports modern taxonomic separation of both taxa.

Howell, S. N. G. & K. Eisermann (2011) Guatemalan Pygmy-Owl Glaucidium cobanense is a good species. Neotropical Birding 9: 74-76.

Un macho de la forma de color café llamando desde una rama de pinabete Abies guatemalensis, molestado por un Hylocharis leucotis. Video por Knut Eisermann.

Tecolotito Guatemalteco
El Tecolotito Guatemalteco (Glaucidium cobanense) occurre en las tierras altas del norte de Centro América, incluyendo Chiapas (México), Guatemala y Honduras.
Hacia arriba