Handbook of the Birds of Europe, the Middle East and North Africa; the Birds of the Western Palearctic

Southern, H. N.; Cramp, Stanley

doi:10.2307/3691

Cited by 211 publications

(92 citation statements)

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“…The geomorphological variables did not influence the Common Buzzard's distribution, probably because the relief is quite uniform in the study area, especially if we calculate the variables for a grid of 5 × 5 square km. This type of variable is more important for those raptor species which breed on cliffs but less important for tree specialist birds [13].…”

Section: Discussionmentioning

confidence: 99%

“…The Common Buzzard (Buteo buteo) is a medium size top predator which inhabits Europe and parts of Asia and Africa [13]. As one of the most common bird of prey species in Europe [14], the Common Buzzard could be used as a model of distribution and interaction with biotic and abiotic factors for those top predators which use agricultural areas for hunting.…”

Section: Introductionmentioning

confidence: 99%

“…As one of the most common bird of prey species in Europe [14], the Common Buzzard could be used as a model of distribution and interaction with biotic and abiotic factors for those top predators which use agricultural areas for hunting. The species' breeding area characteristics, nesting in trees and foraging opportunistically in an open or semi-open landscape, are linked with all habitat categories [13]. These characteristics turn the Common Buzzard into a bioindicator species for ecosystem health and landscape diversity.…”

Section: Introductionmentioning

confidence: 99%

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The Importance of Low-Intensive Agricultural Landscape for Birds of Prey

Baltag

Pocora

Bolboacă

et al. 2021

Land

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Low-intensive agricultural areas of Romania sustain high species diversity. Together with natural habitats, these areas are very important for European biodiversity. The ecosystem´s health is reflected in the predator status because of their position at the top of the trophic networks. The Common Buzzard (Buteo buteo) is the most common bird of prey species in Europe. During the first survey census conducted in Eastern Romania (2011–2012 breeding seasons), 8.55–10.35 breeding pairs/100 square km have been counted. The Common Buzzard density varies between breeding seasons and with differences in habitat structure. Their density is positively influenced by the density of forest edge and Simpson diversity index of habitats but is negatively influenced by the total habitat fragmentation and mean daily temperature. According to this analysis, the selection of breeding territories by common buzzards is positively influenced by a heterogeneous landscape in an area with low-intensive agriculture and with large areas of open habitats made up of natural or semi-natural vegetation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Importance of Low-Intensive Agricultural Landscape for Birds of Prey

Baltag

Pocora

Bolboacă

et al. 2021

Land

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“…Life-history and ecological data were gathered primarily from the Handbook of the Birds of the World , volumes 1–13 [ 62 ], and cross-referenced with birds of the Western Palaearctic [ 63 ]. Body mass of adult birds was taken as a mean of the mass of both sexes, primarily from the Handbook of Avian Body Masses [ 64 ].…”

Section: Methodsmentioning

confidence: 99%

How much calcium to shell out? Eggshell calcium carbonate content is greater in birds with thinner shells, larger clutches and longer lifespans

McClelland

Cassey

Maurer

et al. 2021

J. R. Soc. Interface.

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The avian eggshell is a bio-ceramic structure that protects the embryo. It is composed almost entirely of calcium carbonate and a small amount of organic material. An optimal amount of calcium carbonate in the eggshell is essential for the embryo's development, yet how the ratio of calcium carbonate to organic matter varies between species has not been investigated. Calcium is a limiting resource for most birds, so its investment in their eggs should be optimized for a bird's life history. We measured the relative calcium carbonate content of eggshells in 222 bird species and tested hypotheses for how this trait has evolved with the life-history strategies of these species and other traits of their respective egg physiologies. We found that (i) eggshell calcium carbonate content was positively correlated with species having thinner eggshells and smaller than expected eggs relative to incubating parental mass, (ii) species with small mean clutch sizes had lower calcium carbonate content in their eggshells, and (iii) for species with larger clutch sizes, eggshell calcium carbonate content was negatively correlated with their mean lifespan. The pattern of lower eggshell calcium carbonate in longer lived, larger clutched birds suggests that calcium provision to the eggshell has long-term costs for the individual.

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“…The Tawny Owl Strix aluco is a polymorphic, stationary, nocturnal, generalist predator, occupying a relatively continuous range across most of Europe from the Mediterranean to the Nordic countries [ 10 , 11 ]. Tawny Owl populations are thus confronted with widely varying spatial and temporal environmental conditions from the Mediterranean through temperate to harsh boreal ones [ 12 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Body Condition in the Tawny Owl Strix aluco near the Northern Limit of Its Range: Effects of Individual Characteristics and Environmental Conditions

Solonen¹

2022

Animals

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The body condition of boreal species of vole-eaters seems to vary largely according to fluctuations in vole populations and weather conditions of the preceding winter. I studied females and males of the Tawny Owl Strix aluco of temperate origin near the northern limit of the species’ range in southern Finland to reveal if they show similar patterns to the boreal species. Winter weather conditions before breeding seemed to have pronounced effects on the food availability of Tawny Owls. In females, intrinsic factors such as colour morph and age, as well as the body condition of the mate and the stage of the season (Julian date), governed body condition. In males, only age and Julian date showed pronounced relationships with body condition. The results suggest that deep snow cover protects vole populations through winter until spring better than a minor amount of snow and that frequent temperature fluctuations around the freezing point in early spring make voles more available for owls that are preparing for breeding. This was also reflected positively in the body condition of female owls. Probably due to the efficient use of alternative prey, the effects of fluctuating vole populations on the body condition of Tawny Owls are, in general, only moderate.

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Handbook of the Birds of Europe, the Middle East and North Africa; the Birds of the Western Palearctic

Cited by 211 publications

References 0 publications

The Importance of Low-Intensive Agricultural Landscape for Birds of Prey

The Importance of Low-Intensive Agricultural Landscape for Birds of Prey

How much calcium to shell out? Eggshell calcium carbonate content is greater in birds with thinner shells, larger clutches and longer lifespans

Body Condition in the Tawny Owl Strix aluco near the Northern Limit of Its Range: Effects of Individual Characteristics and Environmental Conditions

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