Cullers are individuals who selectively remove or eliminate certain animals or plants from their environment. Synonyms for cullers include exterminators, hunters, harvesters, and gleaners. Exterminators are individuals who are hired to eliminate pests such as rodents, insects, and other unwanted creatures. Hunters are individuals who hunt wild animals for sport and food. Harvesters are individuals who gather crops and plant material such as fruits, vegetables, and flowers. Gleaners are individuals who gather leftover or abandoned crops and plant material. All of these synonyms for cullers emphasize the act of selectively removing or gathering certain living things from their environment.