The Gray Heron is a large bird, up to 100 cm (39 in) tall and 84–102 cm (33–40 inches) long with a wing span of 155–195 cm (61–77 inches). Body weight can range from 1.02–2.08 kg (2.2–4.6 lb). feathers mostly gray gray up and down grayish-white with some black on the hips. Adults have a white head and neck with a broad black supercell that ends in a slender, hanging coat of arms and bluish-black stripes on the front of the neck. The scapular feather is elongated, and the feather at the base of the neck is also somewhat elongated. Immature birds lack a dark stripe on the head and are generally darker in appearance than adults, with a gray head and neck and a small, dark gray coat of arms. The pink-yellow beak is long, straight and powerful, it is lighter in color in adults in breeding. The iris is yellow and the legs are brown and very long.
The main call is a loud screaming "fraaank", but various throaty and hoarse sounds are heard in the farm. The male uses an ad call to encourage the female to join him in the nest, and both sexes use different greeting calls after the pairing is established. A loud, sharp “schaah” male is used to drive other birds away from the nest, and a quiet “gogogo” expresses anxiety, as when a predator is nearby or a man passes by a colony. Chickens utter loud chatters or beats
