Group 1 - The core observation is the unique collective foraging behavior of the spoon-billed sandpiper, which forms a "life vortex" in the South Dagu Wetland, indicating a positive trend in the ecological environment [1][3] - The South Dagu Wetland has implemented an integrated scientific monitoring platform that combines AI image recognition and sound monitoring technology for 24-hour surveillance of migratory birds, ensuring their natural habitat remains undisturbed while monitoring their survival status [1] - The ecological restoration efforts initiated by Cangzhou City since 2020 have transformed aquaculture ponds into natural wetland structures, significantly enhancing the water ecosystem and providing abundant food sources for migratory birds [3] Group 2 - The bird species recorded in the South Dagu Wetland has increased from 232 in 2017 to 272, with the number of nationally protected bird species also rising significantly [3] - The number of overwintering spoon-billed sandpipers has shown a consistent double-digit growth for four consecutive years, reflecting the success of the wetland's ecological improvements [3]