A more effective — and popular — tactic to fending off the crows may be to employ the help of honeybees. “The bees become very aggressive when they see shiny black objects, because it reminds them of bears or hornets who might attack them. So whenever they see crows, a whole swarm of bees will chase them,” said Atsuo Tanaka, a co-founder of a hive-managing project in Tokyo called The Ginza Honeybee Project. The 300,000 bees Tanaka keeps on rooftops near a tony shopping district have another benefit: honey. The method may not be widely applicable just yet, but it could eventually prove to be one bird-friendly solution to a sticky situation.

~ Audubon Magazine Blog

First cathedrals, then elephants, and now crows. The bees shall inherit the earth.