Summary
Release sites near the airport Stuttgart-Echterdingen are characterized by mean deviation of 90° of initial orientation from the home direction. Airport radar was not in operation for a 3 hr period on 08.28. 1986. Initial orientation of pigeons from two lofts near Tübingen remained unchanged during that period.
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Heilig, T. Flughafenradar ist nicht Ursache für “release-site-bias” bei Brieftauben. J Ornithol 128, 343–344 (1987). https://doi.org/10.1007/BF01640306
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DOI: https://doi.org/10.1007/BF01640306