Hongyan Chapter

Anser cygnoides (scientific name: Anser cygnoides): It is a large waterfowl of the order Aves, family Anatidae, and genus Anser. The body length is about 90 cm and the weight is 2.8-5 Kg. The mouth is black, the body color is light grayish brown, the head to the back of the neck is dark brown, and the front neck is almost white. From a distance, the top of the head and the back of the neck look black, and the front of the neck is almost white. The black and white colors are clear and the contrast is strong.