10/29/2026
6th week Monarch Butterfly Update:
Six of the original twenty Adams Farm Walpole, MA monarch butterflies were detected over the last week, all of them in Texas. They have been pinned down by weather and have moved little over the week. A brutal heat dome over much of Texas has given way to cooler temperatures along with much needed rain, conditions that are not conducive to monarch travel. The Texas Six have spent from seven to twenty days in the Lone Star State, and seem to be waiting until the weather turns favorable for flight. To reach the Reserve in Mexico they still have a range of between 625 miles (for AFW009 Bill and AFW019 Diane) and 900 miles (for AFW011 Felipe).
AFW004 Kornel has been incommunicado for eleven days, last detected on the Mexican border. She may have crossed into Mexico already but simply hasn’t been within range of detection. Of all the monarchs in the Adams Farm cohort she was deemed by Chip Taylor, founding Director of Monarch Watch, to have the best chance of making it to the reserve because of the more northerly route she took through Pennsylvania, Ohio, and Kentucky. She was the first to arrive in Texas on October 6 and stayed north along the borders with Arkansas and Oklahoma for eight days until the hot weather broke in the south.
It appears that AFW003 Rich was done in by the winds that may have taken him across the Gulf, much like AFW001 Barb was a victim of the wind from her 390 mile journey in 22 hours from Long Island, NY to Kitty Hawk, NC back in the early days after release on September 15. He hasn’t been detected for eight days after arriving in Veracruz, MX on October 20 after a three days journey from Louisiana. A few other monarchs from other cohorts have also recently crossed the Gulf and one, from SUNY, Oswego NY) appears to be in a good position to reach the Reserve.
Chip Taylor has noted that this is the latest migration ever. The butterflies are supposed to be in place at the Reserve by November 2, the Day of the Dead holiday in Mexico. Be looking for substantial movement south when the weather clears.