PhysOrg Posted March 26, 2019 Share Posted March 26, 2019 People in many parts of the world feed birds in their backyards, often due to a desire to help wildlife or to connect with nature. In the United States alone, over 57 million households in the feed backyard birds, spending more than $4 billion annually on bird food. View the full article Link to comment Share on other sites More sharing options...
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