Pilots flying in the pre-Worlds flew over the Monarch butterfly
reserve from Valle de Bravo.

The New York Times article
here.

All too often, species that humans care about only get attention when they are
in crisis. Such is the case with monarch butterflies. The insect, famed for its
remarkable annual migrations, faced declines in habitat on both the Mexican and
American ends of its range for decades, but now is the focus of an urgent push
for a rescue. The latest step is a letter sent on Monday to President Obama and
relevant cabinet members by a group of scientists, educators, farmers, and other
concerned citizens organized by the Xerces Society and other conservation groups
focused on these butterflies. The letter (read it here) describes policies the
administration could pursue on both public and private land along the
butterfly’s migratory path.

In February, after about 20 naturalists, poets and other monarch defenders
pressed for international action in an open letter, the plight of the butterfly
was addressed by President Obama and his Mexican and Canadian counterparts at a
summit. The leaders agreed to create a working group to study ways to protect
the butterfly at both ends of its range. A recent article by Richard Conniff in
Yale Environment 360 describes what farmers can do to help monarchs.