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Mortality of Birds at the Ceilometer of the Nashville Airport

Walter R. Spofford
The Wilson Bulletin
Vol. 61, No. 2 (Jun., 1949), pp. 86-90
Stable URL: http://www.jstor.org/stable/4157756
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Mortality of Birds at the Ceilometer of the Nashville Airport
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Abstract

On the morning of September 10, 1948, approximately 300 birds were killed or incapacitated at the ceilometer of the Nashville Airport, and 248 of these were studied at the Nashville Children's Museum. The occurrence appears to be unique in that the birds did not collide with some object while in flight, but were intercepted upon crossing the vertical beam of the ceilometer light, down the long narrow column of which they fell, to be picked up dead, presumably from impact with the ground. The light itself is not a sufficient cause of the accident, as it has been in use for years without incident, and other such instruments are in use at other airports. Furthermore, visibility was high and the cloud level was at 5000 ft. or above during the accident. The actual combination of factors responsible remains a mystery.

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