Observatoire des droits humains (anglais seulement)

Study: Monarch Butterfly Numbers Flutter Up, Still Off Recent Highs

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Favorable weather conditions at breeding grounds for monarch butterflies in Mexico are expected to help raise their numbers to possibly more than 100 million this year, about triple of a few years ago, a study released on Thursday said. But the overall number of the majestic orange and black butterflies that travel thousands of miles (km) on a migration into the United States and Canada is still well below the 1 billion range of two decades ago, the study from a Texas A&M University...

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