Bird population shrinking

The bird population in the U.S. and Canada has declined almost 30% -- or by nearly 3 billion birds -- in the last 50 years, according to a new study.
0:17 | 09/19/19

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Transcript for Bird population shrinking
And the alarming headline tonight involving birds a new study finds North America. Has lost nearly three billion birds since 197 including sparrows blackbirds and finch is 29% of bird's disappearing. Scientists tonight according to climate change growing infrastructure and cats all contributing factor.

This transcript has been automatically generated and may not be 100% accurate.

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