BS2018-01

Despliegue de la cola levantada en el Trogon Acollarado (Trogon collaris)

Resumen

Dos episodios de despliegue de la ‘cola levantada’ fueron observados en el Trogon Acollarado (Trogon collaris) en la Cordillera de la Costa en Venezuela. En ambos despliegues se observaron a un macho y a una hembra moviendo la cola de forma ra ́pida hasta llevarla a una posicio ́n horizontal, mientras emit ́ıan llamadas aproximadamente cada cinco segundos. Este despliegue ha sido reportado para varias especies de trogones en dos contextos, de cortejo o como amedrentamiento al depredador. En los casos reportados en esta nota, debido a que no se observo ́ algu ́n factor que amenazara a las aves, probablemente correspondan a parte del cortejo.

Abstract

The ‘raised tail’ behavior of two pairs of Collared Trogon (Trogon collaris) was observed in the Coastal Range of Venezuela. In both observations, a male and female rapidly raised their tails to a horizontal position and slowly returned them to a vertical hanging position. During these displays, both individuals simultaneously emitted loud calls approximately every 5 seconds, forming a duet. The first display lasted 30 minutes while the second lasted approximately 45 minutes. This ‘raised tail’ behavior has been reported for several species of trogons during courtship and when mobbing a predator. Because there were no predators present during both observations, the described ‘raised tail’ behavior was most likely a courtship display.