A chirping insect is any insect that makes a loud, high-pitched sound. The most common chirping insects are cicadas, crickets, and grasshoppers. Cicadas are large, flying insects with two pairs of membranous wings and a long abdomen. Crickets are small, nocturnal insects with long antennae and hind legs adapted for jumping. Grasshoppers are medium-sized insects with short antennae and powerful hind legs adapted for jumping. All three of these insects are known for their loud chirping sounds, which they use to communicate with each other.