The diet and breeding of Long-eared Owls in relation to vole numbers

Village, Andrew

doi:10.1080/00063658109476726

Cited by 43 publications

(45 citation statements)

References 5 publications

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“…Each pellet was weighed (to within 0.1 g), measured (to within 1 mm), dissected dry, and examined for the presence of voles, shrews, birds, beetles, earthworms and other items. Voles were distinguished from shrews using jaws and other bones (Yalden 1977) or fur (Day 1966). The powder from each pellet was examined for earthworm chaetae using a x7-20 stereoscopic microscope.…”

Section: Pellet Collection and Analysismentioning

confidence: 99%

The diet of Kestrels in relation to vole abundance

Village

1982

Bird Study

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Most previous studies have involved either collecting pellets from a single roost or from several roosts over a comparatively short time. Some of these results are therefore applicable only to a particular season (eg. Davis 1975) or may have been affected by the temporary abundance of unusual prey, eg. Pygmy Shrews Sorex minutus (Simms 1961). The data presented here were collected during a four year study of Kestrels in southern Scotland. My aims were to monitor changes in the diet of the Kestrel population between seasons and over several years to see how these related to changes in the abundance of Short-tailed Voles in the same area.

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Section: Pellet Collection and Analysismentioning

confidence: 99%

The diet of Kestrels in relation to vole abundance

Village

1982

Bird Study

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“…They include barn owls (Tyto alba), which breed in abandoned buildings, long-eared owls, occupying any shelterbelts which already exist when the land is planted, and kestrels, which nest in tree holes, old crow nests or crag ledges (Village 1981(Village ,1982. During peak vole conditions, all these species reach densities higher than those recorded anywhere else in Britain, but all must move on as the trees grow, and the grass which supports the voles disappears.…”

Section: Commercial Forestsmentioning

confidence: 99%

“…Although kestrels readily used nest boxes in Holland (Cava 1968), they did not do so in newly afforested and re-established sites in Wales and north-east England (Petty 1985). Kestrels and long-eared owls bred in artificial crow nests sited in old shelterbelts scattered throughout a newly afforested area in south Scotland (Village 1981. Large boxes sited along the forest edge adjacent to lochs and rivers have been used successfully by'goldeneyes (Bucephala clangula) (Dennis & Dow 1984) and goosanders (Mergus merganser) (Petty unpubl.).…”

Section: Artificial Nest Sites For Birdsmentioning

confidence: 99%

Trees and Wildlife in the Scottish Uplands.

Barkham¹,

Jenkins²

1987

The Journal of Ecology

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Institute of Tree Biology and the Culture Centre of Algae and Protozoa. ITE contributes to, and draws upon, the collective knowledge of the 14 sister institutes which make up the Natural Environment Research Council, spanning all the environmental sciences.The Institute studies the factors determining the structure, composition and processes of land and freshwater systems, and of individual plant and animal species. It is developing a sounder scientific basis for predicting and modelling environmental trends arising from natural or man-made change. The results of this research are available to those responsible for the protection, management and wise use of our natural resources.One quarter of ITE's work is research commissioned by customers, such as the Department of Environment, the Commission of the European Communities, the Nature Conservancy Council and the Overseas Development Administration. The remainder is fundamental research supported by NERC. Preface Forestry and its effects on our countryside are very much in the news. The concern of Scottish ecologists was expressed through the organization of at least 3 conferences during November and early December 1985. Our meeting is just one of them. It is nonetheless timely, and it brings together a wider range of people than the other 2 meetings. The first, organized by the Scottish Ornithologists' Club, discussed the interactions of commercial forestry with birds. The second, under the auspices of the Countryside Commission for Scotland, was concerned mainly with broadleaved trees. We are concerned with wider aspects, including both birds and broadleaved trees, although primarily with conifer plantations in the Scottish uplands. However, it is impossible to consider the impact of any aspect of afforestation in isolation; forestry in the Scottish uplands is not a separate industry from forestry in the lowlands, and the industry is international.The concern of foresters to integrate their management policy with the requirements of the rest of the rural community is obvious. The new policy of the Forestry Commission with regard to broadleaved trees has arisen at least partly as a result of public concern. The economic demand for more home-produced timber may be satisfied only by planting up open hillsides and spoiling views which many people have come to regard as part of their heritage. It may be necessary, though this is still unproven, to afforest part of the habitat of upland birds which are rare in Britain. Decisions on some of these points may be political, but the widespread public concern remains. This concern is about integrating the need for timber with maintaining the richness of the Scottish upland countryside, of which the forests are very much a part. Nature conservationists and animal and plant ecologists already haye a great deal of practical knowledge on the management of semi-natural habitats, but their knowledge of the fauna of commercial forests is, in some cases, not as great as they would wish. The purpose of this meeting is to bring toge...

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“…However, density estimates are sometimes complicated by the presence of nonbreeders; thus in Scotland about 17 percent of the 9-18 pairs per 10 square kilometers were nonbreeders (Village, 1981). Perhaps in central Europe a typical density might be in the range of 10-12 pairs per 100 square kilometers (Cramp, 1985;Glutz and Bauer, 1980).…”

Section: Habitats and Ecologymentioning

confidence: 99%