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• n  small hardy brown-and-grey bird native to Europe

• English sparrow
• Passer domesticus

News & Articles

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• A Brick That Lets Threatened Birds Build Nests Directly Into Walls
  Aaron Dunkerton wanted to help with house sparrow conservation. His solution was the Bird Brick, a fire-clamped cavity brick that could be built into walls and buildings to provide a sustainable nesting site for the birds.        
  July 26, 2013 - Wired News