A bird-lover’s guide to the 2021 CT State of the Birds report
December 1, 2021 — The starting point for the report is a study published in Science in September 2019. Written by 11 top ornithologists from the U.S. and Canada, it shows that over the last 50 years, North America has lost about 30% of its birds. In other words, there are three billion fewer birds in North America today than there were in 1970.
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