Chicken livers and/or gizzards are commonly available packaged separately. Some locations in the US sell fried chicken livers and gizzards. Duck gizzards are also commonly cooked in the confit method. Stewed gizzards are eaten as a snack in Portugal. Chicken dishes include feet, liver, intestines, and gizzards. It may be served cooked in a curry, while barbecued skewered gizzards are also popular. In Italy, gizzards are often used mixed with other offal. Heart, liver and gizzards of chicken are a traditional part of chicken soup. Pickled turkey gizzards are a traditional food in some parts of the Midwestern United States. Birds grind plant material or crush seeds using their beaks and gizzards. Grilled chicken gizzards are sold as street food in Haiti and throughout Southeast Asia. In both countries chicken gizzards are sometimes (partially) substituted for chicken. Other genera of Columbidae have grinding gizzards which either destroy seeds, or regurgitate larger seeds. Crocodilians such as alligators and crocodiles also have gizzards. Gizzards are also a popular delicacy in Zambia.