New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)

The Spectacled Owl (Pulsatrix perspicillata) seems to be uncommon near the southern limit of the species range. Here, we report new records for the Spectacled Owl, identify the subspecies, and examine the spatial distribution of records in the southern part of the species' range. We made 50 sig...

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Detalles Bibliográficos
Autores principales:	Ramírez-Llorens, P., Bellocq, M.I.
Formato:	JOUR
Materias:	Argentina Distribution Pulsatrix perspicillata Spectacled Owl Subspecies Vocalizations morphology new record range size raptor spatial analysis spatial distribution subspecies vocalization Chaco [Argentina] Formosa [Argentina] Paraguay River South America Pulsatrix Strigiformes
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_08921016_v41_n4_p268_RamirezLlorens
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_08921016_v41_n4_p268_RamirezLlorens
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spelling	todo:paper_08921016_v41_n4_p268_RamirezLlorens2023-10-03T15:41:31Z New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata) Ramírez-Llorens, P. Bellocq, M.I. Argentina Distribution Pulsatrix perspicillata Spectacled Owl Subspecies Vocalizations morphology new record range size raptor spatial analysis spatial distribution subspecies vocalization Argentina Chaco [Argentina] Formosa [Argentina] Paraguay River South America Pulsatrix Pulsatrix perspicillata Strigiformes The Spectacled Owl (Pulsatrix perspicillata) seems to be uncommon near the southern limit of the species range. Here, we report new records for the Spectacled Owl, identify the subspecies, and examine the spatial distribution of records in the southern part of the species' range. We made 50 sightings of at least two adults and six juveniles over 3 yr in a gallery-forest habitat within Estancia Guaycolec, Formosa, Argentina (25°58′S, 58°10′W). We compared the external morphology of the adults found in Estancia Guaycolec with those of the P. p. boliviana, P. p. pulsatrix, and P. p. perspicillata subspecies, and found great similarity with the features of P. p. perspicillata. We also analyzed the vocalizations of an adult recorded at Estancia Guaycolec and found that its calls accelerated towards the end, as has been reported for P. p. perspicillata. Spatial analysis of records from the southern region of the Spectacled Owl's range showed an alignment of the records from the Chaco region alongside the Paraguay River. The gallery forests along the banks of the Paraguay River and its tributaries seem to provide P. p. perspicillata with a continuum of suitable habitats, extending its range southward. Conservation of this riparian corridor is likely crucial to maintain the current distribution of the species. © 2007 The Raptor Research Foundation, Inc. Fil:Ramírez-Llorens, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bellocq, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_08921016_v41_n4_p268_RamirezLlorens
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Argentina Distribution Pulsatrix perspicillata Spectacled Owl Subspecies Vocalizations morphology new record range size raptor spatial analysis spatial distribution subspecies vocalization Argentina Chaco [Argentina] Formosa [Argentina] Paraguay River South America Pulsatrix Pulsatrix perspicillata Strigiformes
spellingShingle	Argentina Distribution Pulsatrix perspicillata Spectacled Owl Subspecies Vocalizations morphology new record range size raptor spatial analysis spatial distribution subspecies vocalization Argentina Chaco [Argentina] Formosa [Argentina] Paraguay River South America Pulsatrix Pulsatrix perspicillata Strigiformes Ramírez-Llorens, P. Bellocq, M.I. New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)
topic_facet	Argentina Distribution Pulsatrix perspicillata Spectacled Owl Subspecies Vocalizations morphology new record range size raptor spatial analysis spatial distribution subspecies vocalization Argentina Chaco [Argentina] Formosa [Argentina] Paraguay River South America Pulsatrix Pulsatrix perspicillata Strigiformes
description	The Spectacled Owl (Pulsatrix perspicillata) seems to be uncommon near the southern limit of the species range. Here, we report new records for the Spectacled Owl, identify the subspecies, and examine the spatial distribution of records in the southern part of the species' range. We made 50 sightings of at least two adults and six juveniles over 3 yr in a gallery-forest habitat within Estancia Guaycolec, Formosa, Argentina (25°58′S, 58°10′W). We compared the external morphology of the adults found in Estancia Guaycolec with those of the P. p. boliviana, P. p. pulsatrix, and P. p. perspicillata subspecies, and found great similarity with the features of P. p. perspicillata. We also analyzed the vocalizations of an adult recorded at Estancia Guaycolec and found that its calls accelerated towards the end, as has been reported for P. p. perspicillata. Spatial analysis of records from the southern region of the Spectacled Owl's range showed an alignment of the records from the Chaco region alongside the Paraguay River. The gallery forests along the banks of the Paraguay River and its tributaries seem to provide P. p. perspicillata with a continuum of suitable habitats, extending its range southward. Conservation of this riparian corridor is likely crucial to maintain the current distribution of the species. © 2007 The Raptor Research Foundation, Inc.
format	JOUR
author	Ramírez-Llorens, P. Bellocq, M.I.
author_facet	Ramírez-Llorens, P. Bellocq, M.I.
author_sort	Ramírez-Llorens, P.
title	New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)
title_short	New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)
title_full	New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)
title_fullStr	New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)
title_full_unstemmed	New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)
title_sort	new records clarify the southern distribution of the spectacled owl (pulsatrix perspicillata)
url	http://hdl.handle.net/20.500.12110/paper_08921016_v41_n4_p268_RamirezLlorens
work_keys_str_mv	AT ramirezllorensp newrecordsclarifythesoutherndistributionofthespectacledowlpulsatrixperspicillata AT bellocqmi newrecordsclarifythesoutherndistributionofthespectacledowlpulsatrixperspicillata
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New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata)

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