North America bird population dropped by 3 billion in 50 years, study shows — Twin Cities

Slowly, steadily and almost imperceptibly, North America’s bird population is dwindling. The sparrows and finches that visit backyard feeders number fewer each year. The flutelike song of the western meadowlark – the official bird of six U.S. states – is growing more rare. The continent has lost nearly 3 billion birds representing hundreds of species […]

via North America bird population dropped by 3 billion in 50 years, study shows — Twin Cities

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