Bird population in US and Canada has dropped by 29% since 1970, study says - CNN

Bird population in US and Canada has dropped by 29% since 1970, study says  CNN

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.

Bird population in US and Canada has dropped by 29% since 1970, study says - CNN
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