The term AVIAN SOUNDS can be summarized by the crossword solution CAWS, which is an acronym for the four distinct sounds made by birds. Caws are loud, harsh calls made by crows and other members of the Corvidae family, such as jays and magpies. Chirps are short, high-pitched sounds made by smaller birds like sparrows and finches. Coos are low, repetitive sounds made by doves and pigeons. Lastly, trills are rapid, repeated notes made by songbirds.