Monarch butterfly population wintering in Mexico increases 144%

Monarch production will not be replicated next year, experts warn, as above average temperatures will cause problems

The population of monarch butterflies wintering in central Mexico is up 144% over last year, according to new research.

Related: 'It's a sad reality': a troubling trend sees a 97% decline in monarch butterflies

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from World news | The Guardian http://bit.ly/2FX51H7