Chirper Little is a term used to describe a group of small insects that make noise. The four insects included in this group are the WREN (4 letters), PEEPER (6 letters), KATYDID (7 letters) and CICADA (6 letters). Wrens are small, brown birds that make a variety of chirping sounds. Peepers are small frogs that make a high-pitched peeping sound. Katydids are green, grasshopper-like insects that make a loud, repetitive clicking sound. Cicadas are large, flying insects that make a loud buzzing sound. All four of these insects make noise, hence the term Chirper Little.