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, Patricio, Bellocq, Maria Isabel
Publicado:	2007
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:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08921016_v41_n4_p268_RamirezLlorens 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	paper:paper_08921016_v41_n4_p268_RamirezLlorens
record_format	dspace
spelling	paper:paper_08921016_v41_n4_p268_RamirezLlorens2023-06-08T15:47:19Z New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata) Ramírez Llorens, Patricio Bellocq, Maria Isabel 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. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08921016_v41_n4_p268_RamirezLlorens 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, Patricio Bellocq, Maria Isabel 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.
author	Ramírez Llorens, Patricio Bellocq, Maria Isabel
author_facet	Ramírez Llorens, Patricio Bellocq, Maria Isabel
author_sort	Ramírez Llorens, Patricio
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)
publishDate	2007
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08921016_v41_n4_p268_RamirezLlorens http://hdl.handle.net/20.500.12110/paper_08921016_v41_n4_p268_RamirezLlorens
work_keys_str_mv	AT ramirezllorenspatricio newrecordsclarifythesoutherndistributionofthespectacledowlpulsatrixperspicillata AT bellocqmariaisabel newrecordsclarifythesoutherndistributionofthespectacledowlpulsatrixperspicillata
_version_	1768545605592809472

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

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