Birds as a group have long been of interest for either economic, scientific, aesthetic or emotional reasons, but during the last few decades, with the diversification in human interests, some species have come to be regarded as undesirable at certain places, especially when they occur in abundance. Airfields provide a classic example of places where birds actually endanger human life. Much work has been done on this problem around the world, but no one method of approach has so far been totally effective.
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