World Frozen bird discovered in Siberia is around 46,000 years old, researchers say February 21, 2020February 21, 2020Joshua Bote, USA TODAYComments Off on Frozen bird discovered in Siberia is around 46,000 years old, researchers say This is the first bird carcass procured from Ice Age permafrost deposits, researchers note. It's an ancestor of two different lark subspecies.