A new study aims to clarify the status of the non-native European House Sparrow, using 21 years of citizen science data.
The European House Sparrow has a story to tell about survival in the modern world. In parts of its native range in Europe, House Sparrow numbers are down by nearly 60%.Their fate in the U.S. and Canada is less well known. A new study by Cornell Lab of Ornithology scientists aims to clarify the status of this non-native species, using 21 years of citizen science data from the Cornell Lab's Project FeederWatch.
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