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The climate has become cooler, late autumn has quietly arrived, the birds such as the bearded floating gulls and the mandarin that originally spent summer in Hengshui Lake have migrated south, and many birds have flown to Hengshui Lake to "change the guard", and this year the red-billed diving duck was found for the first time in Hengshui Lake.
At present, Hengshui Lake diving duck mainly has blue-headed diving duck, white-eyed diving duck, red-headed diving duck and crested diving duck, recently, hengshui lake national nature reserve staff in the autumn migration bird survey monitored a male red-billed diving duck, which is the first time in Hengshui Lake monitored red-billed diving duck, Hengshui Lake bird from the previous 327 species to 328 species, the discovery of red-billed diving duck also injected new vitality into the migration season of Hengshui Lake this year.
Red-billed diving duck commonly known as the big red head, is a large duck, the individual is smaller than the mallard duck, the body length of 45-55 cm, the weight of about 1 kg, the red-billed diving duck is our country's three have: beneficial, important economic value, scientific research value of the protected birds, the individual is smaller than the spot-billed duck, the upper body dark brown, the mouth is red. The underbody is black, the two sides are white, the features are very obvious, and it is easy to identify in the wild. It prefers to inhabit open freshwater lakes, rivers with slower flow, and ponds on both sides of the road, especially freshwater lakes rich in aquatic life. Feeding mainly by diving, the food is mainly the buds, stems and seeds of algae, eye vegetables and other aquatic plants.
The red-billed diving duck found in our city is a fan bird that occasionally comes to winter, which is very rare. The discovery in Hengshui Lake has further enriched the biodiversity of Hengshui Lake and once again proved the importance of Hengshui Lake wetlands in the north-south migration route of migratory birds.