The North American Breeding Bird Survey, Analysis Results 1966 - 2019
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This data product consists of a database of population change and abundance estimates for North American birds, estimated from North American Breeding Bird Survey...
本数据产品包含一套针对北美鸟类的种群变化与种群丰度估算数据库，相关估算数据源自北美繁殖鸟类调查（North American Breeding Bird Survey）……
