AVIS-IBIS

Birds of Indian Subcontinent

Predation on Free-Ranging Common Poorwills in Saskatchewan (Depredación de Phalaenoptilus nuttallii Libres en Saskatchewan)

Publication Type:Journal Article
Year of Publication:1995
Authors:Wang, K, Kalcounis, MC, Bender, DJ, Gummer, DL, R. Brigham, M
Journal:Journal of Field Ornithology
Volume:66
Issue:3
Date Published:1995
ISBN Number:02738570
Keywords:Accipitridae, Caprimulgidae, Circus, Circus cyaneus, Circus hudsonius, Phalaenoptilus, Phalaenoptilus nuttallii
Abstract:Although losses of Common Poorwill (Phalaenoptilus nuttallii) nests to predators are common, little is known about predation on adults. Remains of three adults, radio-tagged in Cypress Hills Provincial Park, Saskatchewan, were found. The transmitter of a female was found woven into the base of a Northern Harrier's (Circus cyaneus) nest. Telemetry records show that the bird was killed in the daytime, consistent with harrier predation. The wing and transmitter of the female's mate were found on a stump surrounded by a marsh, suggesting avian predation. This male was also killed in the daytime, implicating harrier predation. The decapitated body of a second male was found buried next to a stump. It is speculated that this bird was taken by a coyote (Canis latrans) or badger (Taxidea taxus) because both are known to bury prey and were often observed in the study area. /// Aunque las pérdidas de nidos de Phalaenoptilus nuttallii a depredadores son comunes, se conoce poco sobre la depredación de los adultos. Se hallaron los restos de tres adultos, provistos con radios en el Parque Provincial de Cypress Hills, Saskatchewan. El transmisor de una hembra se halló enhebrado en la base de un nido de Circus cyaneus. Registros de telemetría indican que el ave fue muerta de día, algo consistente con la depredación por esta especie. El ala y el transmisor del parejo de la hembra se hallaron en un poste rodeado por una ciénaga, sugiriendo depredación por aves. Este macho también fué muerto de día, lo que indica depredación por el género. El cuerpo decapitado de otro macho se halló enterrado cerca de un poste. Se especula que este ave fue tomada por un Canis latrans o por un Taxidea taxus ya que se conoce que ambos entierran las presas y se observaron comunmente en el área de estudio.
URL:http://www.jstor.org/stable/4514035
Short Title:Journal of Field Ornithology
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith