今年，鸟儿又来过冬了

Group 1 - The core viewpoint of the articles highlights the increasing population of migratory waterbirds in Henan Province, with a recorded 157 species and 381,815 individuals, marking a 13% and 6.8% increase compared to the same period in 2025 [2][3] - The geographical location of Henan, situated at the transition between the second and third tiers of China's topography and along the East Asia-Australasia migratory route, makes it a crucial stopover for migratory birds [3] - The ecological improvements in Henan, such as wetland restoration and habitat protection, have led to the return of various rare bird species, indicating successful conservation efforts [3][4] Group 2 - In 2025, Henan organized the restoration of 11,800 acres of wetland in the Yellow River basin, implementing measures like water system connectivity, returning farmland to wetlands, and vegetation restoration to support migratory birds [4] - The presence of migratory birds in Henan serves as a testament to the province's ecological restoration achievements, embodying the principle that "green mountains and clear waters are as valuable as mountains of gold and silver" [5]