Summary of the disapperance of birds in north america

Answer:The bird population in the United States and Canada has plummeted by nearly 3 billion birds, or 29 percent. i think

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History is now repeating itself-across the entire avian world. A new study, which analyzed decades of data on North American birds, estimates that the continent's bird populations have fallen by 29 percent since 1970. That's almost 3 billion fewer individuals than there used to be, five decades ago.