Temperatures finally turned cold this week, and monarchs made a suprising late-season push in the Upper Midwest and Great Lakes regions. A warm September gave late-blooming monarchs time to complete their life cycle. Will the remaining butterflies have time to escape before it's too cold for them to fly?
Why so few monarchs this year? "Never in my 25 years of teaching has it been impossible to find monarchs for my classroom!" People in eastern Canada and the New England states wonder why they've seen so few monarchs this year. What could be the causes?
picks up on East Coast
Still laying eggs across the South. Observers across the southern U.S. from Virginia to Texas, are reporting eggs in their butterfly gardens and natural habitats, like this example from Mississippi College:"Egg laying is still underway, with 31 fresh eggs and a few larvae." How important is production in these states to the population?
Most monarchs are now moving across the Central Plains. Our map of the overnight roosts shows where large numbers of monarchs are concentrated. Where are most of North America's monarchs now? Take a look!
Biggest roost of the season in Texas. The monarchs reached Texas early this year, and they're farther west than usual. This large roost of 30,000+ monarchs is already west of the overwintering sites in Mexico. Will the monarchs continue their westerly pathway across Mexico this year?
First monachs arriving at California's overwrintering sites. Did you know North America has two populations of monarchs? The western population migrates to California and the eastern population migrates to Mexico. Many questions remain about where the populations overlap, especially in the Rocky Mountain states.
New research in Arizona raises questions. Monarchs appeared around the state in July. Why aren't they on the migration map? Because nobody knows if they are resident or migratory butterflies. These sightings present a complicated picture. Watch to see what the Southwest Monarch Study discovers as they collect more data, and check out their recent tagging returns for some surprises.
sightings from northern Mexico--but are they migrants?
Finish: Not Monarchs Yet!