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You searched for: Subject term Athene cunicularia Remove constraint Subject term: Athene cunicularia Subject term Asio Remove constraint Subject term: Asio Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. Late Pleistocene owls (Aves, Strigiformes) from Ecuador, with the description of a new species

Author:
Gastón E. Lo Coco; Federico L. Agnolín; José Luis Román Carrión
Source:
Journal of ornithology 2020 v.161 no.3 pp. 713-721
ISSN:
2193-7192
Subject:
Asio; Athene cunicularia; Bubo virginianus; Pleistocene epoch; Tyto; burrows; females; fossils; new species; predation; Ecuador
Abstract:
... The fossil record of owls of the families Strigidae and Tytonidae in South America is poor. The aim of the present contribution is to report for the first time fossil Strigiformes from Riobamba Canton, at Chimborazo province, in Ecuador. The specimens come from a large owl burrow from Late Pleistocene beds of the Cangagua Formation. We report the finding of fossil record of Athene cunicularia and ...
DOI:
10.1007/s10336-020-01756-x

2. The use of sulfur hexafluoride microbubbles for contrast‐enhanced ocular ultrasonography of the pecten oculi in birds

Author:
Thiago Alegre Coelho Ferreira; Gabrielle Fornazari; André Saldanha; Bruno Lunardeli; Bret A. Moore; Fabiano Montiani‐Ferreira
Source:
Veterinary ophthalmology 2019 v.22 no.4 pp. 423-429
ISSN:
1463-5216
Subject:
chickens; image analysis; Athene cunicularia; eyes; hawks; Psittacula; intravenous injection; Gallus gallus; microbubbles; ophthalmology; sulfur hexafluoride; Asio; roadsides; parakeets; adults; ultrasonography
Abstract:
... BACKGROUND: The pecten oculi is a vascular and pigmented structure localized within the posterior segment of all avian eyes. Its primary function is not fully understood yet. OBJECTIVE: As ultrasonography (US) is a useful imaging modality for evaluation of the pecten oculi, the objective of this study was to investigate the utility of an intravenous contrast solution of sulfur hexafluoride (SF6) m ...
DOI:
10.1111/vop.12608

3. Relative Abundance, Habitat Use, and Seasonal Variability of Raptor Assemblages In the Flooding Pampas of Argentina

Author:
Alejandro V. Baladrón; María S. Bó; Marc J. Bechard; Ana I. Malizia
Source:
Journal of raptor research 2017 v.51 no.1 pp. 38-49
ISSN:
0892-1016
Subject:
Accipiter striatus; Asio; Athene cunicularia; Circus; Falco sparverius; Tyto alba; autumn; birds of prey; cropland; dominant species; ecosystems; falcons; grasslands; grazing; habitat preferences; habitats; land cover; roadsides; seasonal variation; species diversity; spring; surveys; urban areas; Argentina; Pampas region
Abstract:
... We evaluated the species composition, relative abundance, habitat use, and seasonal variability of raptor assemblages in the Flooding Pampas of Argentina, which represents the southeastern part of the biome known as the Rio de la Plata Grasslands. We conducted seasonal roadside surveys to detect raptors in modified and natural habitats over a 3-yr period from spring 2006 through autumn 2009. We cl ...
DOI:
10.3356/JRR-15-56.1

4. Reverse Size Dimorphism Estimated by an Improved Method in Eight Species of Neotropical Owls

Author:
Marcelo de Andréa Segall; Luiz Pedreira Gonzaga; Paulo Cesar Paiva
Source:
Wilson journal of ornithology 2017 v.129 no.4 pp. 883-890
ISSN:
1559-4491
Subject:
Asio; Athene cunicularia; Strix; Tyto alba; birds of prey; confidence interval; females; principal component analysis; sexual dimorphism; Brazil
Abstract:
... .—Male birds of prey are usually smaller than females, known as “Reverse Size Dimorphism” (RSD). We quantified sexual size dimorphism in species that occur in Brazil, and suggest a bootstrap-based approach that allows an estimate of confidence intervals for dimorphism indices. We used body mass, total length, and wing length, measured from museum specimens and a few live birds, to quantify size. W ...
DOI:
10.1676/16-068.1

5. Spotlight surveys for grassland owls on san clemente island, california

Author:
CONDON ANNE M.; KERSHNER ERIC L.; SULLIVAN BRIAN L.; COOPER DOUGLASS M.; GARCELON DAVID K.
Source:
Wilson bulletin 2005 v.117 no.2 pp. 177-184
ISSN:
0043-5643
Subject:
Asio; Athene cunicularia; Tyto alba; birds; geographical distribution; grasslands; population dynamics; surveys; California
Abstract:
... According to Breeding Bird Survey data, grassland birds are among the most imperiled species in North America. Within this group, grassland owls show steep population declines across the United States. Despite these declines, questions still remain regarding the seasonal and geographic distribution of grassland owls. On San Clemente Island (SCI), California, grassland owls are known to occur, but ...
DOI:
10.1676/03-083