• A clear wave moved into Ontario and first-for-state sightings were reported from Montana, New York, Connecticut, and Massachusetts.
• The easternmost monarch at longitude 71°W means the population has reached 2,500 miles from Mexico.

For 3 months, monarchs have been traveling in pursuit of milkweed. They're nearing milkweed's northern limit in the central flyway now. In the east, they'll travel another 500 miles as far as Canada's Maritime provinces of New Brunswick and Nova Scotia. This map shows how far north milkweed grows — and the northern extent of migration.

Eggs on Milkweed
The butterflies are getting down to the business of breeding. Egg reports increased dramatically during the past 2 weeks, with 45% of the season's sightings submitted. Among the easternmost reports was this from Connecticut:

"My first monarch was on wild rose bushes and went straight to the milkweed to deposit eggs. Beyond excited!" wrote E. Dwyer from Branford.

Males in Milkweed
Male monarchs don't lay eggs, so why is milkweed habitat such a good place to find a male?