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Section 2: Migration and Overwintering

Monarch Cluster

This is the fourth video of the Monarch Larva Monitoring Project video training series, reviewing monarch migration routes, characteristics of overwintering locations, and deforestation threats.

Next Video in Training Series > Section 3a: About the Monarch Larva Monitoring Project

Glossary of Terms

  • diapause
    (DI-uh-pawz): a period of dormancy between periods of activity.
  • dormancy
    a period in an organism's life cycle when growth, development, and physical activity are temporarily stopped.
  • logging
    cutting down and removal of trees.
  • migration
    movement of an organism or group from one habitat or location to another; usually periodic or seasonal movement of relatively long distance.
  • oyamel
    (oi-eh-MEL): a species of fir tree, endemic to the mountains of central Mexico. Currently distributed on mountain peaks at elevations between 2400 and 3600 meters.
  • predation
    an interaction where one organism, the predator, benefits and the other, the prey, is harmed.

Photo Credits (in order of appearance)

1. Video footage of monarchs staging to migrate: All Day Video
2. Video footage of overwintering monarchs: Wendy Caldwell
3. Video footage of monarchs staging to migrate: All Day Video
4. Monarch overwintering site map: Journey North
5. Monarchs in overwintering site: Lincoln P. Brower
6. Rosario Reserve aerial photo: Lincoln P. Brower
7. Bird predators: Lincoln P. Brower
8. Monarchs killed by bird predator (2): Monarch Lab Photo
9. Dead monarchs on forest floor: De Cansler
10. Monarchs drinking in Mexico: Karen Oberhauser
11. Monarchs nectaring in Mexico (2): Wendy Caldwell
12. Video footage of Sierra Chincua overwintering sanctuary: Wendy Caldwell
13. Eggs on young milkweed: Gail Gilliland