Pharaoh Eagle-Owl (Bubo ascalaphus)

2020 ◽  
Author(s):  
Denver W. Holt ◽  
Regan Berkley ◽  
Caroline Deppe ◽  
Paula L. Enríquez ◽  
Julie L. Petersen ◽  
...  
Keyword(s):  
Eagle Owl

Spot-bellied Eagle-Owl (Bubo nipalensis)

2020 ◽  
Author(s):  
Denver W. Holt ◽  
Regan Berkley ◽  
Caroline Deppe ◽  
Paula L. Enríquez ◽  
Julie L. Petersen ◽  
...  
Keyword(s):  
Eagle Owl

Does prey abundance affect prey size selection by the Eagle Owl (Bubo bubo)?

2021 ◽  
Author(s):  
Jorge Tobajas ◽  
Carlos Rouco ◽  
Javier Fernandez-de-Simon ◽  
Francisco Díaz-Ruiz ◽  
Francisca Castro ◽  
...  
Keyword(s):  
Prey Size ◽  
Prey Abundance ◽  
Bubo Bubo ◽  
Size Selection ◽  
Eagle Owl

scholarly journals Brood-switching in Eagle Owl Bubo bubo fledglings

Ibis ◽  
2008 ◽  
Vol 150 (4) ◽  
pp. 816-819 ◽  
Author(s):  
VINCENZO PENTERIANI ◽  
MARÍA DEL MAR DELGADO
Keyword(s):  
Bubo Bubo ◽  
Eagle Owl

scholarly journals DETECTION OF FOCI OF TULAREMIA USING ENZYME IMMUNOASSAY FOR THE PREDATORY BIRD PELLETS

2019 ◽  
Vol 16 (31) ◽  
pp. 632-641
Author(s):  
Alexey; ANDREYCHEV ◽  
Ekaterina BOYAROVA ◽  
Alexander LAPSHIN ◽  
Vyacheslav KUZNETSOV
Keyword(s):  
Enzyme Immunoassay ◽  
Causative Agent ◽  
Average Content ◽  
Predatory Bird ◽  
Eagle Owl ◽  
The Republic ◽  
Ural Owl

The results of identifying tularemia foci using the predatory bird pellets in the central part of Russia using the example of the Republic of Mordovia are presented. The efficacy of tularemia detection in pellets compared with other biomaterials has been shown. The average content of the tularemia microbe antigen from the predatory bird pellets was 9,4%. The greatest number of registrations of the causative agent of tularemia in the pellets was observed in Eagle Owl (29,2%). To a lesser extent, the pathogen was detected in the Ural Owl (14,7%). The tularemia pathogen was detected more often in the bird predator pellets than in the biomaterial from rodents. The largest share of positive samples was recorded in the riverine districts. The dynamics of identifying the causative agent of tularemia should be noted in 2015, 2017 and 2018, which are characterized by high values of the indicator.

scholarly journals Dental microwear and mesovear of Microtus voles before and after experimental feeding of owls

2019 ◽  
Vol 486 (5) ◽  
pp. 638-642
Author(s):  
Yu. E. Kropacheva ◽  
S. V. Zykov ◽  
N. G. Smirnov ◽  
R. M. Salimov
Keyword(s):  
Small Mammals ◽  
Digestive System ◽  
Tooth Enamel ◽  
Dental Microwear ◽  
Before And After ◽  
Eagle Owl ◽  
Feed Analysis ◽  
Experimental Feeding ◽  
Bone Remains

Form of expressions of dental microwear and mesovear of small mammals depends on abrasiveness, hardness and a number of other characteristics of the feed. Analysis of micro- and mesorelief is used on paleontological materials for the reconstruction of some parameters of the animals diet. Small mammals move a hard way from objects of biocenoses to fossils. Bone remains are modified in the process of accumulation and fossilization. In particular, bone remains from ornithogenous deposits were influenced to the substances of the digestive system of birds. In this work, an experimental estimation was made of the degree of changes in a number of characteristics of narrow-headed vole molars (Microtus gregalis) from the pellets of two species of owls. On the same samples before and after exposure to substances of the digestive system of a Polar Owl (Nyctea scandiaca) and Eagle Owl (Bubo bubo), it was shown that the microrelief of the tooth enamel undergoes serious changes and haven't information about the in vivo diet of the voles. A different degree of preservation of the mesoreliefs characteristic was shown. An assessment of their applicability for paleoreconstructions depending on this was given.

scholarly journals Changes in the Eurasian eagle-owl (Bubo bubo) population in Czechia and their association with legal protection

2020 ◽  
Vol 14 (1) ◽  
pp. 29-44
Author(s):  
Jan Andreska ◽  
Dominik Andreska
Keyword(s):  
20Th Century ◽  
Legal Protection ◽  
Legal Regulation ◽  
Birds Of Prey ◽  
Early 20Th Century ◽  
Nature Protection ◽  
Predator Species ◽  
Bubo Bubo ◽  
Eagle Owl ◽  
Live Bait

Abstract The article deals with trends in the Eurasian eagle-owl (Bubo bubo) population in Czechia and the interplay between legal regulation of hunting and nature protection. In the early 20th century, the eagle-owl population in Bohemia decreased to an estimated 20 nesting pairs, and the population in Moravia and Silesia was subsequently estimated to be similarly low. In previous centuries, eagle-owls had been persecuted as pest animals; additionally, their chicks were picked from nests to be kept by hunters for the eagle-owl lure hunting method (“výrovka” in Czech), where they were used as live bait to attract corvids and birds of prey, which were subsequently killed by shooting. As soon as the state of the eagle-owl population was established in the 1900s, the effort to save the autochthonous eagle-owl population commenced. Nevertheless, when eagle-owls became legally protected from killing in the 1930s, the eagle-owl lure hunting method was not prohibited. The intensified use of this hunting method in the 1950s was accompanied by serious decline in the populations of birds of prey in the Czech countryside, when tens of thousands of Eurasian sparrowhawks (Accipiter nisus), northern goshawks (Accipiter gentilis), common buzzards (Buteo buteo) and rough-legged buzzards (B. lagopus) were killed on a yearly basis. The usage of eagle-owl chicks in lure hunting was criticised by ornithologists concerned with the conservation of birds of prey. The eagle-owl thus became a subject of more general debate on the role of predators in nature, and this debate (albeit regarding other predator species) has continued to the present-day. As the eagle-owl population has been growing steadily following the prohibition of its killing in the 1930s, its story may serve as an example of the need for effective legal protection of predators to ensure their survival in the intensively exploited central-European environment. The article examines the successful preserving of the eagle-owl in the Czech countryside, from its low point in the early 20th century towards today’s stable and ever-increasing population, focusing on environmental, conservationist, legal and societal aspects of the issue.

scholarly journals Preliminary study on the tolerance to human disturbance of Eagle Owl (Bubo bubo) in an active quarry in NW Hungary

2018 ◽  
Vol 26 (1) ◽  
pp. 54-64
Author(s):  
Mátyás Prommer ◽  
I. Lotár Molnár ◽  
Barna Tarján ◽  
Botond Kertész
Keyword(s):  
Home Range ◽  
Human Activities ◽  
Economic Interests ◽  
Bubo Bubo ◽  
Nest Sites ◽  
Specific Guideline ◽  
Eagle Owl ◽  
Preliminary Study ◽  
Species Specific ◽  
New Habitats

Abstract Population of the Eagle Owl (Bubo bubo) has been increasing in Europe including Hungary. The species occupy new habitats beside its ancient territories including quarries and buildings. This may result in conflicting conservation and economic interests in active quarries. Because eagle owls are strictly protected in Hungary, human activities around known nest sites require environmental permits. We aimed to obtain information on Eagle Owl behaviour in an operating quarry by tracking an adult female to base a future species-specific guideline to issue environmental permits for mining in quarries. We used a combined GPS-GSM and VHF telemetry. We found that the tracked female did not breed in the study year but remained in her home range during the study period. By studying her seasonal and daily patterns of movements, we found that she was not disturbed by regular human activities under the nesting cliff, but she was more sensitive to unexpected non-regular disturbance. Based on the satellite-tracking data, this specimen used an approximately 18 km2 home range during the study period.

scholarly journals The importance of visual markings in night birds. The case of the Eagle Owl, Bubo bubo

2012 ◽  
Vol 82 (1/2) ◽  
Author(s):  
Vincenzo Penteriani ◽  
Maria Del Mar Delgado ◽  
Paola Bartolommei
Keyword(s):  
Bubo Bubo ◽  
Eagle Owl
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