Great Grey Owl (Strix nebulosa) Science Article 1 abstract Forest fragmentation through timber harvesting, agricultural clearing, and other industrial activities is increasing on the Canadian landscape. This study was conducted in order to gain an understanding of habitat requirements for breeding Great Gray Owls (Strix nebulosa) in the forest fragments of central Alberta. D.P. Stepnisky, […]
Category: Strigidae
Reproductive success of a reintroduced population of Eagle Owls Bubo bubo in relation to habitat characteristics in the Eifel, Germany
Eurasian Eagle-Owl (Bubo bubo) Science Article 1 abstract Eagle Owls Bubo bubo were successfully reintroduced in the Eifel (Germany) in 1974-1999. Here we analyse whether reproductive success was related to habitat characteristics and if the patterns of habitat use and reproduction changed during the population increase. Microclimatic as well as mesoclimatic conditions influenced reproductive success. […]
Consequences of Eagle Owl nest-site habitat preference for breeding performance and territory stability
Eurasian Eagle-Owl (Bubo bubo) Science Article 9 abstract I tested the hypothesis that nest-site habitat preferences are adaptive in an Eagle Owl (Bubo bubo) population fromCentral Spain. Eagle Owls preferred to settle in areas linked with watercourses and with more irregular topography (physiographic gradient) and cover of dehesas andMediterranean forests (vegetation gradient), whereas they avoided […]
Habitat preference models for nesting Eagle Owls Bubo bubo: How much can be inferred from changes with spatial scale?
Eurasian Eagle-Owl (Bubo bubo) Science Article 5 abstract Aims: To analyze whether habitat preference patterns of the Eagle Owl Bubo bubo change with spatial scale in an area of very high rabbit Oryctolagus cuniculus density as compared to an area of lower prey availability (Martinez et al., 2003a).Location: An area of over 2,100 km2 located […]
Effects of landscape spatial structure and composition on the settlement of the Eagle Owl Bubo bubo in a Mediterranean habitat
Eurasian Eagle-Owl (Bubo bubo) Science Article 7 abstract We analysed the breeding density of a Mediterranean Eagle Owl Bubo bubo population and the characteristics of the landscape surrounding the nest, in an attempt to identify the determinants of habitat preferences within a radius of 1000 m around each nest. A total of 59 nest site […]
Eagle Owl Bubo bubo proximity can lower productivity of cliff-nesting Peregrines Falco peregrinus
Eurasian Eagle-Owl (Bubo bubo) Science Article 6 abstract The Eagle Owl Bubo bubo is conventionally regarded as an important predator of smaller diurnal birds of prey. In this study, we analysed the relationships between Peregrine productivity and the proximity to Eagle Owl nests/cliffs in a cliff-nesting Peregrine Falco peregrinus population across the central pre-Alps of […]
Possible first record of multiple brooding of the Eagle Owl Bubo bubo
Eurasian Eagle-Owl (Bubo bubo) Science Article 4 abstract […]. Since 1989, we have monitored the Eagle Owl population of the provinces of Alicante Rearing second broods is unlikely for large birds of prey because they lay few eggs, have low feeding rates and nestlings have a slow growth (Klomp, 1970; Newton, 1979). All of this […]
Use of farm chicken carcasses by the Eagle Owl Bubo bubo
Eurasian Eagle-Owl (Bubo bubo) Science Article 2 abstract The diet of the Eagle Owl Bubo bubo has been widely studied, showing the bird’s outstanding trophic eclecticism in the whole of its distribution range (see reviews by Mikkola, 1983; Cramp, 1985). However, the carrion-eating habits of Eagle Owls are little known. […] Serrano, D., Ardeola 47(1), […]
Does predation maintain tit community diversity?
Eurasian Pygmy Owl (Glaucidium passerinum) Science Article 1 abstract European tits of the genus Parus constitute a complex group of coexisting borealbirds. Here we present a survey of the distribution of three coniferous-living Parusspecies and one of their main predators, the pygmy owl (Glaucidium passerinum), onnine isolated islands in Scandinavia. On all islands the coal […]
Influence of snow cover on food hoarding in Pygmy Owls Glaucidium passerinum
Eurasian Pygmy Owl (Glaucidium passerinum) Science Article 2 abstract Voles are the most preferred prey of Pygmy Owls (Glaucidium passerinum) in Northern Europe, where the extensive snow cover may decrease the availability of voles. Snow covermay thus cause changes in the diet fromwhat is expected on the basis of prey abundance alone. Food hoarding behaviour […]