Rose-breasted Grosbeak
Pheucticus ludovicianus
 (L 8" WS 12.5" WT 1.6 OZ )
Striking sex differenc-
es as seen below.
Yard birds
Oak Park, IL
 
Columbus
Park
Chicago
6Oct2010
 
1st winter
male
female
3May2008
3May2008
5May2009