73-million-year-old bird fossils found in Arctic, hint at nesting during dinosaur age

An international study reveals surprising bird nesting activity in the Arctic during the Late Cretaceous period. Fossils from Alaska show birds were breeding there 73 million years ago. This discovery pushes back the timeline of bird activity in the Arctic. Researchers identified bones of juvenile birds, indicating nesting behaviour. The fossils represent diverse bird types, including early diving birds.

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