Two Struggling Icons — Route 66 and Monarch Butterflies — Make for Strange Bedfellows | Chicago News | WTTW
Where to See Spectacular Monarch Migrations Along the Coast - Texas Highways
Texas brakes for butterflies: “Monarch Highway” comes to IH35 – Texas Butterfly Ranch
Southwest Monarch Study
Press Release: Niman Ranch Farmer Network to Resurface Monarch Highway with $200,000 Commitment to Help Stem 80% Loss of Iconic Pollinator - Niman Ranch
Monarchs' incredible journey takes new direction | The Star
Spring Migration Ecology | MonarchNet
Monarch butterfly migrations reveal new clues of connections
Generalized map of the migration route of monarchs in eastern North... | Download Scientific Diagram
Continental Nomads: Monarch Butterflies - Pollinators (U.S. National Park Service)
Summer drought impacts migration route for newly endangered monarch butterflies | Texas Standard