Bird populations in the United States and Canada have dropped by 29% since 1970, signifying 2.9 billion birds lost in almost 50 years, according to a new study.

Overall, the drop was from about 10 billion birds in 1970 to about 7 billion now. The cause is primarily habitat loss, as birds are losing the places they need to live, find food, rest and raise ...

Over three billion birds, or 29% of 1970s abundance have been lost in North America over the last 50 years. To make these dismal determinations, scientists drew from multiple long-term bird monitoring ...

Birds may not need us, but we certainly need them. Experts raise red flags as common birds vanish from sight across vast US ...

Peachtree Rock has recently spotted the first red-cockaded woodpecker in Lexington County after going decades without any ...

North America's skies are lonelier and quieter as nearly 3 billion fewer wild birds soar in the air than in 1970, a comprehensive study shows. The new study focuses on the drop in sheer numbers of ...

According to a well-documented study, we have lost some 3 billion birds since 1970. The situation is not improving despite our backyard generosity. A second die-off of wildlife is underway, as well.

Among bird species commonly sighted in gardens, the house sparrow was down 70 per cent on 1970 numbers. Skylark populations have declined by more than three quarters since the 1970s.

Birds that call Pennsylvania home are in serious decline. Why it matters: Birds are indicators of the health of their ...