Birds are rapidly vanishing from North America, with dramatic population losses in places that were once thought safe.

“North American birds are one of very few taxonomic groups and regions where such data exist to facilitate this approach. This emphasises the vital need for more field data collection, both ...

North American bird populations are shrinking most rapidly in the very areas where they are still most abundant, according to a new study leveraging citizen science data for nearly 500 bird species.

Every few years, the North American Bird Conservation Initiative (nabci-us.org/) publishes a report on the “state of the birds.” The geographic scope for these ...

North American bird populations are plummeting, especially in drylands, grasslands and the Arctic where they have historically been most abundant, new research has found.

A study published in Science reveals that North American bird populations are declining most severely in areas where they should be thriving. Researchers from the Cornell Lab of Ornithology ...

By the numbers: In the past 50 years, Illinois species like the Henslow's Sparrow and Bobolink have seen population crashes of over 40%, per the North American Bird Conservation Initiative's 2025 ...

United States National Museum. Special Bulletin No. 1. Life Histories of North American Birds with Special Reference to Their Breeding Habits and Eggs, with Twelve Lithographic Plates by Charles ...