The fish crow (Corvus ossifragus) is a species of crow associated with wetland habitats in the eastern and southeastern United States. The fish crow is a small bird, with an average adult weight of 280–320 grams (9.9–11.3 oz) in males and 247–293 grams (8.7–10.3 oz) in females. The average male wingspan is similarly larger at 278–292 millimetres (10.9–11.5 in), compared to 264–277 millimetres (10.4–10.9 in) in females. The total body length is between 36–40 centimetres (14–16 in). The fish crow is superficially similar to the American crow, but is smaller and has a silkier, smoother plumage by comparison. The upperparts have a blue or blue-green sheen, while the underparts have a more greenish tint to the black. The eyes are dark brown. The differences are often only really apparent between the two species when seen side by side or when heard calling. The bill is usually somewhat slimmer than the American crow, but is only readily distinguishable if both species are seen together. (Source: Wikipedia.org, CC BY-SA)