HOUSE SPARROW (Passer domesticus) - songbird factfile
House Sparrow | Audubon Field Guide
Where Have All the House Sparrows Gone?
When invasive species clash: Competition between the House Sparrow and House Finch - FeederWatch
The Great Sparrow War of the 1870s - JSTOR Daily
House sparrow status signalling theory no longer flies
Nobody asked the songbirds if they wanted a job, and that's why America fought the Sparrow War - Cambridge Day
The House Sparrow in Boston, Part I | Boston Public Library
Protecting Protected Birds from Pest Birds - Pest Control Technology
House Sparrow – Indiana Audubon
House Sparrow Identification, All About Birds, Cornell Lab of Ornithology
House Sparrow Identification, All About Birds, Cornell Lab of Ornithology
A House Sparrow Isn't Likely To Be A Bird You Welcome To Your Bird Feeder - Here's Why
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House Sparrows - The Washington Post
House Sparrow, The Ultimate Urban Dweller - Wildlife SOS
House Sparrow - eBird
House Sparrow Identification, All About Birds, Cornell Lab of Ornithology
Commonly Misidentified Species: Cold Weather Sparrows - Maine Audubon
