The Wrack

Sometime between this past Friday evening and Saturday morning, the copper beech tree chrysalis shell was abandoned, and a monarch took to the sky! This monarch will most likely continue the northward path of its parents — monarchs take 3-4 generations to reach their northernmost extent in the summer migration. Perhaps the offspring of this monarch will make the journey, over 2,000 miles, to the same branches of oyamel fir trees of Mexican mountains that their great-great grandparents overwintered on last year.

Several weeks ago, a dedicated group of volunteers set out into the milkweed fields to rescue monarch eggs and caterpillars, just before the Reserve's annual mowing. This is the third annual Monarch Rescue effort, and this year the results were sobering. After nearly three hours of searching the undersides of milkweed leaves, our team of fourteen only came up with two caterpillars (and one already empty monarch egg case). In 2010, 37 eggs and 25 caterpillars were rescued by our team, and in 2012 we rescued 90 eggs and 22 caterpillars (we didn't have a Rescue in 2011).

Scientists in the monarch's wintering grounds in Mexico documented a 59 percent decrease in butterflies last year. Loss of habitat, drought, the use of pesticides, and climate change are all thought to play a role.