Today’s invention is based on the interesting finding that many birds have evolved to look downwards or sideways when in flight, rather than ahead. They are also sensitive to movement, rather than stable visual phenomena.
This may account for their odd tendency to collide with objects (including planes) despite their superb visual capabilities.
I therefore suggest that aircraft be equipped with a scanning searchlight, pointing ahead and downwards. This would flash the outline of a giant bird of prey on the ground or onto clouds in front of the plane.
Flocks of birds, looking downwards, would be startled by the effect and turn tail before a birdstrike on the aeroplane could occur.