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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Autor principal: Ramírez-Llorens, P.
Otros Autores: Bellocq, M.I
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Lenguaje:Inglés
Publicado: 2007
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100 1 |a Ramírez-Llorens, P. 
245 1 0 |a New records clarify the southern distribution of the Spectacled Owl (Pulsatrix perspicillata) 
260 |c 2007 
270 1 0 |m Ramírez-Llorens, P.; Departamento de Ecología, Genética y Evolución, FCEN-Universidad de Buenos Aires, Pab. 2, piso 4, Buenos Aires 1428, Argentina; email: llorens@ce.fcen.uba.ar 
506 |2 openaire  |e Política editorial 
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520 3 |a 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.  |l eng 
593 |a Departamento de Ecología, Genética y Evolución, FCEN-Universidad de Buenos Aires, Pab. 2, piso 4, Buenos Aires 1428, Argentina 
651 4 |a ARGENTINA 
651 4 |a ARGENTINA 
651 4 |a CHACO [ARGENTINA] 
651 4 |a FORMOSA [ARGENTINA] 
651 4 |a SOUTH AMERICA 
690 1 0 |a DISTRIBUTION 
690 1 0 |a PULSATRIX PERSPICILLATA 
690 1 0 |a SPECTACLED OWL 
690 1 0 |a SUBSPECIES 
690 1 0 |a VOCALIZATIONS 
690 1 0 |a MORPHOLOGY 
690 1 0 |a NEW RECORD 
690 1 0 |a RANGE SIZE 
690 1 0 |a RAPTOR 
690 1 0 |a SPATIAL ANALYSIS 
690 1 0 |a SPATIAL DISTRIBUTION 
690 1 0 |a SUBSPECIES 
690 1 0 |a VOCALIZATION 
690 1 0 |a PARAGUAY RIVER 
690 1 0 |a PULSATRIX 
690 1 0 |a PULSATRIX PERSPICILLATA 
690 1 0 |a STRIGIFORMES 
700 1 |a Bellocq, M.I. 
773 0 |d 2007  |g v. 41  |h pp. 268-276  |k n. 4  |p J. Raptor Res.  |x 08921016  |t Journal of Raptor Research 
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