Butterflies were streaming overhead at estimated rates of 6,000 - 10,000 monarchs per hour. Patti Berkstresser describes the spectacle she witnessed.

"Thousands migrating over Leakey, Texas, starting at about 7:30 this morning. Counted over 100 per minute for at least 1 1/2 hours. They were flying about 300 feet elevation until about 9:00, and then were observed closer to ground. Hundreds were along Leakey Springs, dipping in and out of water. Only a few (10) stopped to nectar."

¡Bienvenido a Mexico!
Flying low and in procession, newly-arrived monarchs stirred excitement as they crossed into Mexico.

"At this very moment, the CONANP monitoring team is seeing 800-1,000 monarchs near Muzquiz, Coahuila," wrote Rocio Treviño whose network tracks migration across northern Mexico.

The migration is right on schedule, according to Treviño, who marks Columbus Day as the traditional arrival time.

First for New Mexico
Given how far west the migration has drifted this fall, a roost in New Mexico should come as no surprise. But it's a first for Journey North and further documents the signficant impact of wind on migration.