Leucistic animals like the calf have black eyes ... said a similar birth happened once in the late 19th century, before bison were nearly extinct. The birth is believed to happen in 1 in 1 million ...

Albino animals typically have pink eyes while leucistic animals don’t. White bison are typically albino, leucistic, meaning they have white fur with blue eyes, or beefalo, a bison-cattle crossbreed.

while leucistic animals produce only some pigmentation. The newborn calf has a black nose and eyes, so it’s not albino, Jim Matheson, executive director of the National Bison Association ...

Leucistic animals lack some cells that otherwise ... and they may have light pink or orange-colored eyes and reduced vision. Albino bison will lack dark colors in their eyes, noses and hooves ...

Photos provided to park biologists indicate the calf is leucistic, rather than albino. That means it has black eyes and hooves with some pigmentation. Yellowstone's bison population fluctuates ...

Leucistic animals lack some cells that otherwise ... and they may have light pink or orange-colored eyes and reduced vision. Albino bison will lack dark colors in their eyes, noses and hooves ...

Yellowstone National Park on Friday confirmed the birth of a white bison calf at the park but said there have been no confirmed sightings of the calf since June 4. The birth of white bison calf in ...