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Rate of Bird Collision with Power Lines: Effects of Conductor-Marking and Static Wire-Marking (Tasa de Choques por Parte de Aves con Líneas del Tendido Eléctrico: Efecto de Marcadores de Conducción y Marcadores de Estática)
The number of birds killed (per km) by collision with power lines in west-central Spain did not differ between one transmission line and two distribution lines. For all three power lines, we tested the ability of different markers to reduce bird collision by comparing marked spans to unmarked spans...
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Published in: | Journal of field ornithology 1998, Vol.69 (1), p.8-17 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | The number of birds killed (per km) by collision with power lines in west-central Spain did not differ between one transmission line and two distribution lines. For all three power lines, we tested the ability of different markers to reduce bird collision by comparing marked spans to unmarked spans along the same power line. A spiral (30 cm × 100 cm) reduced collisions (static wire marking). Black crossed bands (35 cm × 5 cm) were also effective, but not for the vulnerable Great Bustard (Otis tarda) (conductor marking). The third marker, consisting of thin black stripes (70 cm × 0.8 cm), did not reduce mortality (conductor marking). The highest mortality from power-line collision was recorded for the Great and Little Bustard (Otis tarda and Otis tetrax). /// No se encontró diferencia, entre el número de aves muertas (por kilómetro) causado por choques con líneas del tendido eléctrico entre torres con una o dos líneas de distribución de alto voltaje. Para diferentes tipos de arreglos de líneas eléctricas se utilizaron diferentes marcadores a diferentes distancias para determinar su efecto en la tasa de choques. Un espiral (30 × 100 cm) redujo los choques. Bandas negras transversales (35 × 5 cm) fueron efectivas para las aves con la excepción de Otis tarda. El tercer tipo de marcador, que consistió de bandas largas pero finas (70 × 0.8 cm) no redujo la mortalidad de las aves. La mortalidad más alta debido a las choques recayó en Otis tarda y en O. tetrax. |
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ISSN: | 0273-8570 1557-9263 |