The lights on tall communication towers warn pilots to avoid the towers when flying at night. Unfortunately, the steady red lights often used on towers have the opposite effect
on birds: the bright beams attract and confuse them. Instead of avoiding the lights, the
birds fly directly toward them, crashing into the towers or becoming entangled in power
lines. Millions of birds have died this way. However, there is a solution. Unlike steady
lights, flashing or blinking lights don't attract birds. In response to demands from
conservation groups, the Federal Aviation Administration in 2016 began requiring
communication towers in the U. S. to use blinking lights instead of steady ones.
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