Brown-headed Cowbird
Molothrus ater
 (L 7.5" WS 12" WT 1.5 oz)
Does not build its own
nests...been found to use the
nests of 220 other species.
s
Yard birds
Oak Park, IL
7May05
7Jul09
MortonArboretum 2Jul09
 Lisle, IL 6May06
female
 McKinley St Pk, IL
 19Aug10
juveniles