Study Shows North American Bird Population Has Fallen by Nearly One-Third in Less Than 50 Years “Protecting the natural world is essential to saving birds and humans alike” Study Shows North American Bird Population Has Fallen by Nearly One-Third in Less Than 50 Years North America lost 29 percent of its bird population—around three billion birds—over the last 49 years, according to a new report. “Decline of the North American avifauna,” a study released on Thursday in the journal Science, found that the continent has seen a net loss of 2.9 billion birds since 1970. “The birds are the canary in the coal mine,” The Bird Conservancy of the Rockies’…
