High Quality Content by WIKIPEDIA articles! The Curl-crested Jay is a jay from South America. This New World or "blue" jay is a beautiful and large bird with predominantly dark blue back, an almost black head and neck, and snow-white chest and underparts. They have a pronounced curled crest rising from just behind the beak; the crest is on average larger in males, but the sexes are generally quite similar. The voice is a loud, gray, graa, gray-gray-gray, sometimes repeated 8-10 times. They sound similar to crow. Curl-crested Jays are native to the cerrados of central and southern and the caatinga of northeastern Brazil. In the southeast Amazon Basin, Curl-crested Jay ranges into the upstream headwater regions adjacent to the northwestern cerrado. In the west, the extreme headwaters of the west-flowing Guapore River on the Brazil-Bolivia are home.