Alaskan fossils reveal birds nested in Arctic with dinosaurs

Scientists have discovered the oldest evidence of birds nesting in polar regions, dating back 73 million years. This finding significantly extends the known timeline of avian presence in the Arctic. Researchers unearthed over 50 bird fossils in Alaska, revealing that birds shared the Arctic with dinosaurs. The fossils, including those of embryos and hatchlings, predate previous evidence by more than 25 million years. The fossils suggest these ancient birds were related to modern species, potentially including migratory birds. The discovery provides insight into the long-term ecological role of birds in high-latitude environments.