Mottled Owl (Ciccaba virgata)

Holt, Denver W.; Berkley, Regan; Deppe, Caroline; Enríquez, Paula L.; Petersen, Julie L.; Salazar, José Luis Rangel; Segars, Kelley P.; Wood, Kristin L.; Kirwan, Guy M.; Marks, Jeffrey S.; Boesman, Peter F. D.

doi:10.2173/bow.motowl.01

Cited by 3 publications

(11 citation statements)

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“…We expected to find a positive association between green cover percentage with the presence of the Mottled Owl given the dependence of this species on well-preserved forested areas for breeding and foraging (Gerhardt et al 1994;Menq and Anjos 2015;Holt et al 2019), as well as previous evidence suggesting strong relationships between the quantity of greenspaces with raptors occurrence in urban areas (Dykstra et al 2012;Poppleton 2016). Furthermore, given the pollution status that noise and ALAN represent, we predicted these variables to be negatively related with the occurrence of the Mottled Owl, as they could limit the habitat use of some owl species (Patón et al 2012;Scobie et al 2016;Ciach 2017, 2019;Shonfield and Bayne 2017).…”

Section: Introductionmentioning

confidence: 89%

“…We also predicted that the vocal activity of the Mottled Owl would begin earlier in areas with low anthropogenic noise and light pollution levels, based on previous findings suggesting that both sources of pollution can influence the timing of the singing activity of urban diurnal birds (Dominoni et al 2016;Marín-Gómez and MacGregor-Fors 2019). Moreover, given that the Mottled Owl is a forest dependent species (Gerhardt et al 1994;Holt et al 2019), we expected to have more records in wellvegetated areas. Finally, for our fourth goal, we predicted higher vocal output of the Mottled Owl to occur during the time periods with less anthropogenic noise, based on recent evidence showing that urban birds respond to traffic noise by adjusting the timing of song output to avoid masking with anthropogenic noise levels (e.g., Dominoni et al 2016;Sierro et al 2017).…”

Section: Introductionmentioning

confidence: 89%

“…The Mottled Owl (Ciccaba virgata) is considered the most common and widespread forest owl in the Neotropics, ranging from southern Mexico to Argentina and Brazil (Gerhardt et al 1994;Enríquez 2015;Holt et al 2019). This species inhabits a wide variety of habitats from sea level to 2500 m a.s.l.…”

Section: Focal Speciesmentioning

confidence: 99%

“…This species inhabits a wide variety of habitats from sea level to 2500 m a.s.l. (e.g., mature forests, second growth forests, coffee and cacao plantations, areas with scattered trees near to small urban settings; Holt et al 2019). Mottled Owls are cavity nesters associated to forests with high canopy and high abundance of large trees (Gerhardt et al 1994;Rivera-Rivera et al 2012;Menq and Anjos 2015;Restrepo-Cardona et al 2015).…”

Section: Focal Speciesmentioning

confidence: 99%

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Nightlife in the city: drivers of the occurrence and vocal activity of a tropical owl

et al. 2020

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Background: Cities differ from non-urban environments by the intensity, scale, and extent of anthropogenic pressures, which can drive the occurrence, physiology, and behavior of the organisms thriving in these settings. Traits as green cover often predict the occurrence patterns of bird species in urban areas. Yet, anthropogenic noise and artificial light at night (ALAN) could also limit the presence and disrupt the behavior of birds. However, there is still a dearth of knowledge about the influence of urbanization through noise and light pollution on nocturnal bird species ecology. In this study, we assessed the role of green cover, noise, and light pollution on the occurrence and vocal activity of the Mottled Owl (Ciccaba virgata) in the city of Xalapa (Mexico). Methods: We obtained soundscape recordings in 61 independent sites scattered across the city of Xalapa using autonomous recording units. We performed a semi-automated acoustic analysis of the recordings, corroborating all Mottled Owl vocalizations. We calculated two measures of anthropogenic noise at each study site: daily noise (during 24 h) and masking noise (mean noise amplitude at night per site that could mask the owl's vocalizations). We further performed generalized linear models to relate green cover, ALAN, daily noise, and masking noise in relation to the owl's occurrence (i.e., detected, undetected). We also ran linear models to assess relationships among the beginning and ending of vocal activity with ALAN, and with the anthropogenic and masking noise levels at the moment of which vocalizations were emitted. Finally, we explored variations of the vocal activity of the Mottled Owl measured as vocalization rate across time. Results: The presence of Mottled Owls increased with the size of green cover and decreased with increases in both artificial light at night and noise levels. At the temporal scale, green cover was positively related with the ending of the owl's vocal activity, while daily noise and ALAN levels were not related to the timing and vocal output (i.e., number of vocalizations). Furthermore, the Mottled Owl showed a marked peak of vocal activity before dawn than after dusk. Although anthropogenic noise levels varied significantly across the assessed time, we did not find an association between high vocal output during time periods with lower noise levels. Conclusions: Spatially, green cover area was positively related with the presence of the Mottled Owl in Xalapa, while high noise and light pollution were related to its absence. At a temporal scale, daily noise and ALAN levels were not related with the timing and vocal output. This suggests that instead of environmental factors, behavioral contexts such as territoriality and mate interactions could drive the vocal activity of the Mottled Owl. Further studies need to

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Section: Introductionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 89%

Section: Focal Speciesmentioning

confidence: 99%

Section: Focal Speciesmentioning

confidence: 99%

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Nightlife in the city: drivers of the occurrence and vocal activity of a tropical owl

et al. 2020

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“…Poco se conoce sobre su biología reproductiva en Colombia, excepto por reportes de aves en estado reproductivo que fueron encontradas entre febrero a mayo desde La Guajira hasta Córdoba, un polluelo en abril en Sierra Nevada de Santa Marta y un juvenil en julio en la región Caribe colombiana (Hilty y Brown, 2001). También se ha documentado que anidan en cavidades o ramas gruesas entre epífitas o en nidos abandonados de otras aves más grandes y ponen entre uno y tres huevos blancos (Gerhardt et al, 1994;König et al, 2008;Holt et al, 2018b). En este trabajo se describe un evento de anidación de Bubo virginianus nacurutu y de Ciccaba virgata virgata como contribución al escaso conocimiento de estas especies.…”

Section: Intropicaunclassified

Descripción de un evento de anidación del búho real (Bubo virginianus nacurutu Vieillot, 1817) y del búho moteado (Ciccaba virgata virgata Cassin, 1849) en Huila, Colombia

Padilla

2018

Intropica

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El presente estudio registra por primera vez en Colombia un evento de anidación en especies de búhos Bubo virginianus nacurutu y Ciccaba virgata virgata en el departamento de Huila, en estas especies se describen aspectos como época de anidación; tiempos de incubación de los eventos y la permanencia en sus nidos. Los resultados mostraron que B. virginianus nacurutu presento un tiempo de incubación de 33 días, mientras C. virgata virgata mostró un tiempo de 30 días. En lo que corresponde al tiempo permanencia se pudo evidenciar que la salida del polluelo de la especie C. virgata virgata ocurrió a los 50 días a partir de la eclosión y en B. virginianus nacurutu se observó entre 39-43 días. La temporada de anidación para ambas especies comprendió los meses de julio y noviembre de 2016, presentándose un tiempo de desarrollo menor a lo registrado en otros estudios en América.

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An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

et al. 2022

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The northeast Brazilian state of Alagoas harbors a rather diverse, and one of the world’s most threatened, avifauna. However, the knowledge about its avifauna is currently scattered on several publications and the state’s birds have never been comprehensively assembled into a checklist. To fill this shortfall, we present here the first critical review of all available bird records for the state of Alagoas. We present a list of 520 bird species recorded in the state, of which 503 are supported by documentary evidence. We also comment on the distribution, migratory movements, taxonomy and conservation of the region’s avifauna and correct previous misidentified or invalid records for the state.

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Mottled Owl (Ciccaba virgata)

Cited by 3 publications

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Nightlife in the city: drivers of the occurrence and vocal activity of a tropical owl

Nightlife in the city: drivers of the occurrence and vocal activity of a tropical owl

Descripción de un evento de anidación del búho real (Bubo virginianus nacurutu Vieillot, 1817) y del búho moteado (Ciccaba virgata virgata Cassin, 1849) en Huila, Colombia

An annotated avian inventory of the Brazilian state of Alagoas, one of the world’s most threatened avifauna

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