Eastern Bluebird
 Sialia sialis

 Female
 Charleston
 South Carolina
 8 Mar 2008

 by Kendall Brown
 ©Kendall Brown

 Eastern Bluebird
 Sialia sialis

 (House Sparrow,
   bottom left)
 Indianapolis
 Indiana
 October 2006

 by Tim Avery
 ©Tim Avery

 Eastern Bluebird
 Sialia sialis

 Cape May Point,
 New Jersey
 July 1996

 by Jerry Liguori
 ©Jerry Liguori