The most direct reason is that the hamburger made of chicken tastes good and tender, while the duck has a fishy smell, which is not easy to bite and tastes bad. The second reason is that chicken contains a lot of high-quality protein, which has the effects of warming the middle warmer, benefiting qi, strengthening tendons and bones. But also contains high protein, calcium, phosphorus, iron and unsaturated fatty acids, which is not only delicious, but also nutritious. So hamburgers often use chicken. If the host likes duck meat, he can cook it and try it.