Juncos, red-winged blackbirds and many other Mountain West birds echo canaries in the coal mine knpr.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from knpr.org Daily Mail and Mail on Sunday newspapers.
Many birds are in trouble nationwide. A 2019 study published by Cornell found that bird populations have declined 30% since 1970. That's nearly three billion birds.
Tipping point species are close to threatened or endangered status because they have lost half or more of their populations in the last 50 years. Some of the birds on the list may come as a surprise.