El Alilicucú Ribereño (Megascops sanctaecatarinae) en la provincia de Corrientes, Argentina
; Di Sallo, Facundo Gabriel 
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2023-10-10
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Asociación Ornitológica del Plata
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Nuestras Aves
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0326-7725
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3008-8305
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En Argentina el Alilicucú Ribereño (Megascops sanctaecatarinae) es considerado Vulnerable, su presencia y distribución han sido poco claras a lo largo de décadas. Los cambios de estatus taxonómico, el desconocimiento de sus vocalizaciones y los hábitos crípticos favorecieron que la especie fuera desapercibida e ignorada en la bibliografía a lo largo del siglo XX. Información reciente esclareció su situación en Argentina, particularmente en la provincia de Misiones y en base a registros dudosos del Alilicucú Grande (Megascops atricapilla) se sugirió la presencia del Alilicucú Ribereño en la provincia de Corrientes. El 8 de abril de 2022 obtuvimos registros documentados en dos sectores del arroyo Yohaza, en el Establecimiento las Marías, depto.Santo Tomé, Corrientes. Nuestros registros son los primeros en esta provincia y sugieren que registros previos del Alilicucú Grande en la misma localidad podrían ser erróneos. Adicionalmente, registramos en coexistencia a la Lechucita Canela (Aegolius harrisii), la cual posee vocalizaciones confundibles con el Alilicucú Ribereño, constituyendo la tercera localidad moderna de esta especie en Corrientes.
In Argentina the Long-tufted Screech-Owl (Megascops sanctaecatarinae) is considered Vulnerable; its presence and distribution have been unclear for decades. Its taxonomic status, the lack of knowledge about its voices, and its cryptic habits allowed it to go unnoticed and ignored in the literature throughout the 20th Century. Recent information clarified its situation in Argentina, particularly in the province of Misiones, and based on dubious records of Black-capped screech Owl (Megascops atricapilla) it was suggested that it might be present in the province of Corrientes. On 8 April 2022 we documented records in two sectors of the Yohaza creek, at Establecimiento Las Marías, Santo Tomé, Corrientes. Our records are the first for this province, and they suggest that previous records of Black-capped screech Owl, in the same locality could be erroneous. Additionally, we recorded in coexistence the Buff-fronted Owl (Aegolius harrisii), which has vocalizations confused with the Long-tufted Screech-Owl, constituting the third modern locality of this species in Corrientes.
In Argentina the Long-tufted Screech-Owl (Megascops sanctaecatarinae) is considered Vulnerable; its presence and distribution have been unclear for decades. Its taxonomic status, the lack of knowledge about its voices, and its cryptic habits allowed it to go unnoticed and ignored in the literature throughout the 20th Century. Recent information clarified its situation in Argentina, particularly in the province of Misiones, and based on dubious records of Black-capped screech Owl (Megascops atricapilla) it was suggested that it might be present in the province of Corrientes. On 8 April 2022 we documented records in two sectors of the Yohaza creek, at Establecimiento Las Marías, Santo Tomé, Corrientes. Our records are the first for this province, and they suggest that previous records of Black-capped screech Owl, in the same locality could be erroneous. Additionally, we recorded in coexistence the Buff-fronted Owl (Aegolius harrisii), which has vocalizations confused with the Long-tufted Screech-Owl, constituting the third modern locality of this species in Corrientes.
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