Birds were nesting in the Arctic during age of dinosaurs, scientists discover

Minuscule fossils from 73m years ago are oldest evidence yet for birds nesting in polar regions

The Arctic might evoke images of polar bears and seals, but 73m years ago it was a dinosaur stomping ground. Now fossil hunters say these beasts shared their turf with a host of different birds.

Researchers believe their discovery of more than 50 bird fossils from the Prince Creek formation in Alaska is the oldest evidence of birds nesting in polar regions, pushing back the date by more than 25m years.