Fight in midair.
Jody Melanson
Registered Users Posts: 416 Major grins
House Sparrow and Purple Martin fighting in midair. I have never seen such an aggressive bird as this House Sparrow! He would repeatedly attack the Purple Martins.
You might think House Sparrows are cute, but they attack and kill adult Bluebirds, sometimes trapping and decapitating them in the nestbox and building their own nest on top of the corpse. They destroy eggs and young. At a minimum, they often harass native birds (especially more timid species like Chickadees) into abandoning nestboxes. A House Sparrow flock near a nestbox can also cause premature fledging. House Sparrows are probably the number one enemy of Bluebirds and Purple Martins.
Taken from : http://www.sialis.org/hosp.htm
You might think House Sparrows are cute, but they attack and kill adult Bluebirds, sometimes trapping and decapitating them in the nestbox and building their own nest on top of the corpse. They destroy eggs and young. At a minimum, they often harass native birds (especially more timid species like Chickadees) into abandoning nestboxes. A House Sparrow flock near a nestbox can also cause premature fledging. House Sparrows are probably the number one enemy of Bluebirds and Purple Martins.
Taken from : http://www.sialis.org/hosp.htm
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