https://apnews.com/f9030a84058a44e29e808d8592dac19f

WASHINGTON (AP) — A comprehensive study shows there are nearly 3 billion fewer wild birds in North America than in 1970.

The new study finds that the bird population in the United States and Canada was probably around 10.1 billion nearly half a century ago and has dropped 29% to about 7.2 billion birds.