Keith Olstad:
Sandhill Cranes; Sherburne NWR, Zimmerman, MN 9165
Keith Olstad:
Sandhill Cranes; Sherburne NWR, Zimmerman, MN 9179
Keith Olstad:
Great Blue Heron; Sherburne NWR, Zimmerman, MN 9343
Keith Olstad:
Double-crested Cormorant, female; Sherburne NWR, Zimmerman, MN 9272
Keith Olstad:
Double-crested Cormorant, female; Sherburne NWR, Zimmerman, MN
Keith Olstad:
Black Tern; Sherburne NWR, Zimmerman, MN 9192
Keith Olstad:
Black Tern; Sherburne NWR, Zimmerman, MN 9220
Keith Olstad:
Black Tern; Sherburne NWR, Zimmerman, MN 9217
Keith Olstad:
Black Tern with fish for nestlings; Sherburne NWR, Zimmerman, MN
Keith Olstad:
Black Tern; Sherburne NWR, Zimmerman, MN 9307
Keith Olstad:
Killdeer; Sherburne NWR, Zimmerman, MN 9470
Keith Olstad:
Killdeer; Sherburne NWR, Zimmerman, MN 9480
Keith Olstad:
Northern (Yellow-shafted) Flicker, male; Sherburne NWR, Zimmerman, MN 9495
Keith Olstad:
Eastern Kingbird; Sherburne NWR, Zimmerman, MN 9489
Keith Olstad:
Eastern Kingbird; Sherburne NWR, Zimmerman, MN 9491
Keith Olstad:
Least Flycatcher; Sherburne NWR, Zimmerman, MN 9551
Keith Olstad:
Chestnut-sided Warbler, male; Sherburne NWR, Zimmerman, MN 9533
Keith Olstad:
Chestnut-sided Warbler, male, banded; Sherburne NWR, Zimmerman, MN 9545
Keith Olstad:
American Redstart, male; Sherburne NWR, Zimmerman, MN 9528
Keith Olstad:
Yellow Warbler, male; Sherburne NWR, Zimmerman, MN 9509
Keith Olstad:
Common Yellowthroat, male; Sherburne NWR, Zimmerman, MN 9184
Keith Olstad:
Dickcissel; Sherburne NWR, Zimmerman, MN 9452
Keith Olstad:
Grasshopper Sparrow; Sherburne NWR, Zimmerman, MN 9377
Keith Olstad:
Grasshopper Sparrow; Sherburne NWR, Zimmerman, MN 9375
Keith Olstad:
Grasshopper Sparrow; Sherburne NWR, Zimmerman, MN 9428
Keith Olstad:
Brown-headed Cowbird, male; Sherburne NWR, Zimmerman, MN 9395
Keith Olstad:
Indigo Bunting, male; Sherburne NWR, Zimmerman, MN 9561
Keith Olstad:
Eastern Meadowlark; Sherburne NWR, Zimmerman, MN 9404
Keith Olstad:
Eastern Meadowlark; Sherburne NWR, Zimmerman, MN 9385