White Storks migrating at night by utilising oil flares

During the evening of 24th February 1978, I witnessed a large movement of White Storks Ciconia ciconia over the Gassi Touil oasis in Algeria (30°N 7°E), the birds apparently using the thermals from the 12 flare stacks situated there. The day had been overcast with little wind, sunset was at 18.30 hours and the first storks were seen drif


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