This Week's Update Includes:

• News: Concentrated in Texas
• Explore: Historic Data
• The Migration: Maps and Journal

The Final Month
By the end of April, most monarchs migrating from Mexico will have reached the end of their lives. Watch where monarchs travel during April to see where other spring breeding habitat is located.

A Dramatic Difference from 2012
Spring 2012 was the warmest on record. Milkweed had already emerged 800 miles north of today's northernmost sites. Minnesota and Ontario had reported milkweed by early April 2012! This spring's temperatures and rate of spring green-up are closer to normal.

Milkweed and Migration Synchronized
Milkweed emergence and monarch migration are closely synchronized. Compare migration patterns of last spring to this spring. Notice the similarity between the migration and milkweed maps each spring.

Monarchs and Temperatures
Temperatures affect monarchs throughout their annual cycle. Think about examples during spring migration, the breeding season, fall migration, and overwintering period.

• Explore: Historic Data