Why butterflies are decreasing in numbers?

Question

information on why butterflies are decreasing in numbers?

Answer 1

Loss of habitat is the #1 reason. Since many areas are now being developed, the meadows needed to sustain the butterfly population is vanishing. Lawns and parking lots don't make butterflies.

"The greatest threat to the world's butterfly species is the ongoing loss of suitable habitat. This loss is due primarily to human activities, including agriculture, logging, urban expansion, industry, recreation, and pollution."

http://www.amnh.org/exhibitions/butterflies/highlights/conservation.php