Great Horned Owl (Bubo virginianus)

2020 ◽  
Author(s):  
Christian Artuso ◽  
C. Stuart Houston ◽  
Dwight G. Smith ◽  
Christoph Rohner
Keyword(s):  
Bubo Virginianus

Great Horned Owl (Bubo virginianus)

1998 ◽  
Author(s):  
C. Stuart Houston ◽  
Dwight G. Smith ◽  
Christoph Rohner
Keyword(s):  
Bubo Virginianus

Mechanism of pellet egestion in great-horned owls (Bubo virginianus)

1976 ◽  
Vol 231 (6) ◽  
pp. 1824-1829 ◽  
Author(s):  
GE Duke ◽  
OA Evanson ◽  
PT Redig ◽  
DD Rhoades
Keyword(s):  
Gastrointestinal Motility ◽  
Strain Gauge ◽  
Abdominal Muscles ◽  
Lower Esophagus ◽  
Bubo Virginianus ◽  
Final Shape ◽  
Bipolar Electrodes ◽  
Gastric Contractions

To study the mechanism of oral pellet egestion in great-horned owls, bipolar electrodes and strain-gauge transducers were chronically implanted in the esophagus, muscular stomach, and duodenum of six owls. Recordings from conscious owls plus simultaneous radiographic observations revealed characteristic gastrointestinal motility patterns associated with egestion. Beginning at about 12 min before egestion, gastric contractions formed the final shape of the pellet and pushed it into the lower esophagus. The pellet was moved out of the esophagus by antiperistalsis during the last 8--10 s before egestion. During pellet egestion, contractions of abdominal muscles were not detected. Pellet egestion appears to be unlike either emesis in mammals with a simple stomach or regurgitation in ruminants.

Detection and Density of the Great Horned Owl (Bubo virginianus) in Arctic Alaska

2021 ◽  
Vol 55 (1) ◽  
Author(s):  
Madison Reynolds ◽  
John Shook ◽  
Greg Breed ◽  
Knut Kielland
Keyword(s):  
Bubo Virginianus ◽  
Arctic Alaska

scholarly journals Pupipara (Diptera, Hippoboscidae) in wild birds attended at a rehabilitation center in southern Brazil

2019 ◽  
Vol 28 (2) ◽  
pp. 330-332 ◽  
Author(s):  
Renata Fagundes Moreira ◽  
Laura de Campos Farezin ◽  
Ugo Araújo Souza ◽  
Bruna Zafalon da Silva ◽  
Derek Blaese Amorim ◽  
...  
Keyword(s):  
New Records ◽  
Bird Species ◽  
Rehabilitation Center ◽  
Porto Alegre ◽  
Bubo Virginianus ◽  
Wild Mammals ◽  
Accipiter Striatus ◽  
Parabuteo Unicinctus ◽  
Pathogenic Agents ◽  
Veterinary Hospital

Abstract The hippoboscids are cosmopolitan permanent obligate hematophagous ectoparasites of birds, domestic and wild mammals and, occasionally, humans. Some species may act as vectors or hosts of etiological pathogenic agents. The aims of this study were to report on the first cases of Hippoboscidae in Crax blumenbachii and Parabuteo unicinctus; to provide new reports from Brazil on Tyto furcata and Asio stygius parasitized by Icosta americana; to report on individuals of Bubo virginianus, Falco sparverius and Accipiter striatus parasitized by genera Ornithoctona; and to provide new reports on parasitism of O. erythrocephala in the state of Rio Grande do Sul. The birds of prey and C. blumenbachii were attended at a rehabilitation center in Porto Alegre and at a veterinary hospital in Cruz Alta. These new records demonstrate the huge gap that exists regarding studies on avian ectoparasites and highlight potential vectors of hemoparasites for the bird species studied.

scholarly journals Yeasts and filamentous fungi in psittacidae and birds of prey droppings in midwest region of Brazil: a potential hazard to human health

2019 ◽  
Vol 79 (3) ◽  
pp. 414-422 ◽  
Author(s):  
W. B. Simi ◽  
D. P. Leite-Jr ◽  
C. R. Paula ◽  
H. D. Hoffmann-Santos ◽  
D. T. Takahara ◽  
...  
Keyword(s):  
Birds Of Prey ◽  
Potential Hazard ◽  
Bubo Virginianus ◽  
Mato Grosso ◽  
Rhea Americana ◽  
Bird Droppings ◽  
Yeast Fungi ◽  
Harpia Harpyja ◽  
Midwest Region ◽  
Ara Macao

Abstract Birds of prey and from Psittacidae family are host to fungal microbiota and play an important role in the epidemiology of zoonoses. Few studies in the literature have characterized mycelial and yeast fungi in the droppings of these birds and correlated the isolates with the zoonotic potential of the microorganisms. Droppings from 149 birds were evaluated and divided into two groups: captive: Rhea americana araneipes, Primolius maracana, Ara ararauna, Ara chloropterus, Anodorhynchus hyacinthinus, Amazona aestiva, Ara macao macao, Ramphastos toco, Sarcoramphus papa, Busarellus nigricollis, Bubo virginianus nacurutu, Buteogallus coronatus, Buteogallus urubitinga urubitinga, Spizaetus melanoleucus, Spizaetus ornatus ornatus, Buteo albonotatus, Geranoaetus albicaudatus albicaudatus, Rupornis magnirostris magnirostris and Harpia harpyja, and quarantined birds: Amazona aestiva and Eupsitulla aurea. The fungal isolates were identified according to macroscopic (gross colony appearance), micromorphological and biochemical characteristics. Among birds displayed in enclosures, Aspergillus niger (41.1%) and Candida kefyr (63.8%) were the fungi most frequently isolated in Harpia harpyja and Ramphastos toco, respectively. For quarantined birds, the following percentages were observed in Eupsittula aurea , (76.6%) C. krusei, (84.4%) C. kefyr and (15.2%) C. famata, while in Amazona aestiva, (76.2%) C. krusei was observed. These findings indicate potentially pathogenic species in the bird droppings assessed, which constitute a risk of exposure for keepers and individuals who visit the zoo. Birds of the Cerrado and Pantanal of Mato Grosso (Central Western region of Brazil) could act in the epidemiological chain of important zoonoses.

Pulmonary Carcinoma in a Great Horned Owl (Bubo virginianus)

2010 ◽  
Vol 41 (1) ◽  
pp. 77-82 ◽  
Author(s):  
Christy Rettenmund ◽  
Kurt K. Sladky ◽  
Daniel Rodriguez ◽  
Michael Petersen ◽  
Marie E. Pinkerton ◽  
...  
Keyword(s):  
Bubo Virginianus ◽  
Pulmonary Carcinoma

A Communal Roosting of the Great Horned Owl (Bubo virginianus)

2014 ◽  
Vol 48 (1) ◽  
pp. 88-89
Author(s):  
Bryce Robinson ◽  
Caitlin Davis
Keyword(s):  
Bubo Virginianus ◽  
Communal Roosting
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