Chemical substance within the large group of pesticides
. The name is derived from the two Latin terms "avis" (bird) and "caedere" (kill). Avicides were formerly used to kill or control harmful birds
. Especially in viticulture, these can cause very great damage or even a complete crop failure. Today, however, their use is severely restricted or completely prohibited in many countries. Substances that repel the birds (repellents) or that trigger reactions in individual animals that are suitable for driving away the whole flock serve as substitutes.