The photos below were taken by Josh OBrien. He uses a Nikon D600+Sigma 150-500mm. To see more of his photos, check his Facebook page here.
Great Horned Owls
Great Horned Owls
Juvenile Bald Eagles
Juvenile Bald Eagle
Juvenile Bald Eagle stretching
Great Gray Owl
Great Gray Owl
American Robin
Downy Woodpecker
Common Raven
Great Horned Owl
Great Horned Owl
Juvenile Bald Eagle
That first photo of the Great Horned Owls is stunning.