The trumpeter is a game bird used in soups, stews and braised dishes. The Grey-winged trumpeter is native to the Amazon basin of South America, southeast Venezuela and Guiana. Natural diet: Grey-winged trumpeters feed on vegetable matter and insects. Size / weight range: This bird grows to be 17 to 24 inches in length and weighs a little over 2 pounds. Interesting facts: The Grey-winged trumpeter travels in flocks of 50 or more.