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NestWatch Male and Female House Sparrow - NestWatch
When invasive species clash: Competition between the House Sparrow and House Finch - FeederWatch
We Helped Scientists Track Birds This Summer. - The New York Times
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NestWatch Survival of the Coolest Nests: Birds, Heat Waves, and Conservation in Working Landscapes - NestWatch
NestWatch NestWatch - Where Birds Come to Life
Sparrows: Native and non-native. Do you know the difference? Tips on managing invasive species.
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House Sparrow Overview, All About Birds, Cornell Lab of Ornithology
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Photos and Videos for House Sparrow, All About Birds, Cornell Lab of Ornithology