Doug Greenberg:
Sweet little barn cat
Doug Greenberg:
Iowa barn cat
Doug Greenberg:
Vesper sparrow
Doug Greenberg:
Summer tanager
Doug Greenberg:
Watching the Sunrise
Doug Greenberg:
Black-tailed prairie dog
Doug Greenberg:
Badlands sunrise
Doug Greenberg:
Least chipmunk
Doug Greenberg:
A badlands morning scene
Doug Greenberg:
Mom and baby bison
Doug Greenberg:
Carhenge!
Doug Greenberg:
Eastern wood pewee