little blue heron with lunch ~ 25-30" (64-76 cm). W. 3'5" (1 m). Adult slate blue with maroon neck. Bill grayish with black tip; legs greenish. Immature is white, usually with dusky tips on primaries. Young birds acquiring adult plumage usually have a piebald appearance. Snowy Egret somewhat smaller, all white, with black bill and legs, yellow lores and feet. Voice: Usually silent; squawks when alarmed. Various croaks and screams at nesting colonies.