Song recordings and environmental factors affect the response rate of Tropical Screech-Owls to conspecific playback: the importance of carefully designed protocols

Peixoto, Luis Felipe; Paiva, Paulo Cesar; Gonzaga, Luíz Pedreira

doi:10.1007/s10344-021-01491-5

Cited by 2 publications

(2 citation statements)

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“…We used call playbacks to stimulate Northern Pygmy-Owls to respond, a common approach in studies of owls (e.g., Peixoto et al 2021). We broadcast recordings of pygmy-owl advertising calls from a portable speaker (Bluetooth Boom 3; Ultimate Ears, Irvine, California, USA) mounted on a 3.3 m pole placed within the forest or in a tree along forest edge.…”

Section: Playback Experimentsmentioning

confidence: 99%

“…We hypothesized that Northern Pygmy-Owls would be found more often at higher elevations in the summer than during winter, and that distributions at the lower elevations would exhibit the opposite pattern. Assessment of our hypothesis utilized call playbacks throughout the year to stimulate vocalizations of pygmy-owls, a common method for increasing detection of owls (Marion et al 1981, Sater et al 2006, Vrezec and Bertoncelj 2018, Peixoto et al 2021).…”

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confidence: 99%

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Seasonal patterns in the distribution of Northern Pygmy-Owls (Glaucidium gnoma) across an elevational gradient

Scott,

Robinson

2024

The Wilson Journal of Ornithology

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Northern Pygmy-Owls (Glaucidium gnoma) occur in mountainous regions of western North America, but their movements and seasonal patterns of distribution are poorly understood. Assumed to be altitudinal migrants, data evaluating their seasonal distributions are scarce. We quantified the seasonal distributions of Northern Pygmy-Owls across elevations in the Oregon Coast Range, USA, by using call playbacks to elicit responses. We hypothesized that pygmy-owls would be more widely distributed at higher elevations during the summer, and during the cooler winter months their distributions would shift downslope to more moderate climates. Northern Pygmy-Owls responded at all elevations and in all seasons but responded most frequently at middle elevations. The pattern of responses with respect to season and elevation was consistent in the 2 years of our study (2020–2021), suggesting that they were not altitudinal migrants in our study area during those years. However, characterizing altitudinal migration from distributions alone requires careful interpretation so we encourage further studies using tagged and tracked individuals.

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Section: Playback Experimentsmentioning

confidence: 99%

mentioning

confidence: 99%