Arctic fossils reveal birds nested with dinosaurs

Scientists have discovered the oldest evidence of bird nesting in the Arctic, dating back 73 million years, revealing a previously unknown aspect of prehistoric life. This finding reshapes understanding of the region's ancient ecosystem. Researchers unearthed over 50 fossilized bird remains in Alaska, including embryos and hatchlings, indicating nesting behavior. These fossils, found alongside dinosaur remains, suggest a diverse ecosystem existed in the Arctic millions of years ago. The discovery, published in Science, includes fossils of extinct bird groups like Ichthyornithes and Hesperornithes. The findings provide insight into the evolution of birds and their ability to thrive in polar environments.