Listen for Cricket and Katydid Sounds at Night You can’t see the singers in the shadows, but you sure can hear them! Their ...

The two main players are the katydid and the snowy tree cricket. Though you can't help but hear them you may never have seen them. Katydids are bright green and fairly large with chunky bodies ...

There is uncertainty about which species of crickets were used to determine the formula. NOAA scientists mention the snowy tree cricket (pictured above) is famous for possibly telling the temperature.