Monarch butterflies rebounding but population still well off highs
Saturday, February 27, 2016 JON HERSKOVITZ FOR REUTERS
By Jon Herskovitz
AUSTIN, Texas (Reuters) – North America’s monarch butterflies are on a rebound and the number of the plucky orange and black creatures, which gather in Mexico before flying north to Canada, could soon stand at around 150 million, a new survey showed on Friday.
The survey from the World Wildlife Fund in Mexico is the second this month to show the numbers on the mend, but the population is still well below a high in the 1 billion range two decades ago.
The monarch’s recent comeback is due to favorable weather and the planting of more milkweed, an important plant to keep numbers up on its migration route, the survey said.