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Yellowstone National Park, Wyoming, USA
500mm Lens

The eye of a bull bison being distracted by the approach of another male. I, on the other hand, was photographing this giant from inside my vehicle.

Bison are North America’s largest land mammal. Has a distinctive humped profile with larger forequarters and smaller hindquarters; these traits are more pronounced in males. The brown wooly pelage is thickest around the neck, extending onto the shoulders and back in males. Males also have larger horns, which are stouter and more curled; female horns are more slender with upward pointing tips. Calves are reddish. Hair is longer in the winter. The Endangered Wood Bison (B. b. athabascae) from western Canada is slightly taller, darker, and woolier, with a larger hump than the Plains Bison

The bison breeding season is July-August, gestation length is 285 days, and females have only a single calf with birth coinciding with spring greenup. Females leave the herd and lie down to give birth. The female fiercely defends the newborn calf. Sexual maturity is reached at age 2.

Habitat: Forests & woodlands, Grasslands & prairies, Meadows & fields

Range: Rocky Mountains, Western Canada, Alaska

Information Source:


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I started out as an artist, became a pilot, and ended up where I am now: nature photographer and educator. Being a pilot allowed me to observe the Earth and humanity’s impact on it from 30,000 feet for many years. It allowed me to experience different cultures and to see the world through many lenses.

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  • Themis
    Themisover 2 years ago

    Brilliant focus and composition – is that a mountain I see reflected in his eye? I love the golden light in his fur!

  • thank you Themis, it could be, there were lots of mountains around :-)

    – William C. Gladish

  • Magaret Meintjes
    Magaret Meintjesover 2 years ago


  • you’re welcome

    – William C. Gladish

  • Konstantinos Arvanitopoulos
    Konstantinos A...about 1 year ago

    Congratulations, your image is in the TOP TEN of the AVATAR CHALLENGE FOR JUNE 2013 in the Top Shelf Wildlife group!

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