Keith Olstad:
Great Gray Owl, Sax Zim Bog 9797-2
Keith Olstad:
Great Gray Owl, Sax Zim Bog 9814-2
Keith Olstad:
Great Gray Owl, zeroing in on prey, Sax Zim Bog 9469-2
Keith Olstad:
Great Gray Owl, en route to prey, Sax Zim Bog 9471-2
Keith Olstad:
Great Gray Owl, sitting on prey, Sax Zim Bog 9434-2
Keith Olstad:
Great Gray Owl, with hapless mouse, Sax Zim Bog 9444-2
Keith Olstad:
Great Gray Owl, going for prey, Sax Zim Bog 9425-2
Keith Olstad:
Great Gray Owl, with another hapless vole, Sax Zim Bog 9825-2
Keith Olstad:
Great Gray Owl, juvenile, Sax Zim Bog 9633-2
Keith Olstad:
Great Gray Owl, Sax Zim Bog 9793-2
Keith Olstad:
Great Gray Owl, in snow squall, Sax Zim Bog 9738-2
Keith Olstad:
Northern Hawk-Owl, Sax Zim Bog 9774-2
Keith Olstad:
Northern Hawk-Owl, Sax Zim Bog 9788-2
Keith Olstad:
Northern Hawk-Owl, Sax Zim Bog 9892-2
Keith Olstad:
Northern Hawk-Owl, ready to launch, Sax Zim Bog 9877-2
Keith Olstad:
Northern Hawk-Owl, going for vole, Sax Zim Bog 9881-2
Keith Olstad:
Northern Hawk-Owl, incoming, Sax Zim Bog 9860-2
Keith Olstad:
Common Redpoll, Sax Zim Bog 9484-2
Keith Olstad:
Rough-legged Hawk, Sax Zim Bog 9926-2
Keith Olstad:
Rough-legged Hawk, Sax Zim Bog 9549-2
Keith Olstad:
Rough-legged Hawk, Sax Zim Bog 9559-2
Keith Olstad:
Rough-legged Hawk, Sax Zim Bog 9922-2