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The population of butterflies - the beautiful insects that play a vital role in pollination and the health of ecosystems - ...

Butterflies of all kinds of species, in all parts of the country, have declined by one to two percent since 2000.

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A sweeping study for the first time tallies butterfly data from more than 76,000 surveys across the continental United States. The results: Butterflies -- all of them -- are disappearing.

Total butterfly abundance — the total individuals of a species within a given area — plummeted by 22 percent between 2000 and 2020, according to the study, published Thursday in Science.

Over the past 20 years the U.S. butterfly population has declined 22%, a dramatic loss that has scientists concerned. "The easy number to think about is the total number of butterflies in your yard.