Mating swarm


How do a lovelorn insects find a mate?

There are various strategies, but one of them is to gather in a mating ball or mating swarm. Such swarms abound at this time of year, hanging over fixed references such as a tree or post, or marshalling along the edge of a sunbeam.

In the swarm the insects perform a dance which involves flying to the top and floating down. When they find each other, they will mate in the air.

A mating swarm of mayflies had anchored itself along the edge of a sunbeam.

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