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AbstractAbstract
[en] The title study concerns the period 1984-1991. The wind park consists of 18 three-bladed 300 kW horizontal axis wind turbines of 35 meters height, and a rotor diameter of 30 meters, seven meteorological towers, and three cluster and control buildings. Aspects studied included disturbance of breeding, resting or feeding, and migrating birds, behavior of birds approaching the wind turbines during the day and night, and bird victims due to collision with the wind turbines and the meteorological towers. In this report data on the number of birds passing the wind park at night and the flight behavior of these birds during their passage are presented and discussed. The numbers were determined in the period 1985-1988 by using a search approach radar, two passive image intensifiers in combination with infrared spot lights, and a thermal image intensifier. Illumination of the wind turbines to avoid collisions is not believed to be necessary, because birds seem to be quite good at spotting the wind turbines, even during conditions of moderate visibility at night. 30 figs., 23 tabs., 18 app., 109 refs
Original Title
De invloed van de Sep-proefwindcentrale te Oosterbierum (Friesland) op vogels
Primary Subject
Source
1992; 208 p; Available from DLO Institute for Forestry and Nature Research, P.O. Box 23, 6700 AA Wageningen (Netherlands)
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Report
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Numerical Data
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