YELLOWSTONE NATIONAL PARK, Wyo. — 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 the calf in June may be due to a “natural genetic legacy” present in Yellowstone’s bison. The wild bison population in Yellowstone has slowly been rebuilt, the park service said.

Bison returning from brink of extinction in Yellowstone 04:56. Yellowstone National Park has confirmed that an extremely rare white buffalo calf was born in the park earlier this month.

YELLOWSTONE NATIONAL PARK, Wyo. — 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.

YELLOWSTONE NATIONAL PARK, Wyo. — 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.

YELLOWSTONE NATIONAL PARK, Wyo. — 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.

YELLOWSTONE NATIONAL PARK, Wyo. — 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.

Yellowstone National Park confirmed the birth of a rare white buffalo calf on June 4 but said it hasn't been seen since. The white bison fulfills a Lakota prophecy. Skip Navigation ...

The birth of white bison calf in the wild is believed to occur once in every 1 million births or even less frequently, the park said. The birth of the white buffalo in the wild, which fulfilled a ...

YELLOWSTONE NATIONAL PARK, Wyo. — 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.

YELLOWSTONE NATIONAL PARK, Wyo. — 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.