Population trends of wintering birds around Banbury, Oxfordshire, 1975–96
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چکیده
منابع مشابه
Identification of wintering birds of Yazd artificial wetland
In the present study, the wintering birds of the artificial wetlands of Yazd province in 1393, 1395 and 1396 were studied. This study is one of the first studies conducted with the aim of preventing the drying process of the wetland by emphasizing on maintaining water rights and protection of migratory birds in the artificial wetland of Yazd. Data from winter and autumn counts which were carrie...
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Breech presentation is defined as when the buttock of the fetus occupies the lower uterine segment (or the pelvis) and the head occupies the fundus, when the fetal lie is longitudinal. It is the commonest form of mal-presentation of the fetus [1]. Undiagnosed breech occurs when breech is not diagnosed during the antenatal period. About 40% of babies are breech at 20 weeks gestation, 20% at 28 w...
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OBJECTIVES To determine how many kidney function tests are done, on whom, how frequently they are performed and how they have changed over time. DESIGN Retrospective study of all serum creatinine, urine albumin and urine creatinine tests. SETTING Primary and secondary care in Oxfordshire from 1993 to 2013. PARTICIPANTS Unselected population of 1,220,447 people. MAIN OUTCOME MEASURES The...
متن کاملPredicting Occupancy of Wintering Migratory Birds: Is Microhabitat Information Necessary?
Information regarding microhabitat, here defined as small-scale vegetation structure, is often useful in predicting use of habitat by birds. Quantifying microhabitat, however, is expensive and labor intensive compared to assessment of habitat at a larger scale, possibly from remotely sensed imagery. To assess the importance of microhabitat information in constructing predictive models of habita...
متن کاملEffects of Prescribed Burns on Wintering Cavity-Nesting Birds
Primary cavity-nesting birds play a critical role in forest ecosystems by excavating cavities later used by other birds and mammals as nesting or roosting sites. Several species of cavity-nesting birds are non-migratory residents and consequently subject to winter conditions. We conducted winter bird counts from 1998 to 2000 to examine the abundance and habitat association of cavity-nesting bir...
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ژورنال
عنوان ژورنال: Bird Study
سال: 1999
ISSN: 0006-3657,1944-6705
DOI: 10.1080/00063659909461111