Fauna
Insect

Monarch

Danaus plexippus

Also known as Milkweed Butterfly, Wanderer, Common Tiger, Black-Veined Brown

Monarchs complete one of the most remarkable insect migrations on Earth, with late-summer generations traveling thousands of kilometers to overwintering sites in central Mexico and coastal California. Caterpillars feed exclusively on milkweed foliage, sequestering toxic cardiac glycosides that render both larvae and adult butterflies distasteful to predators. Adults feature striking orange wings laced with black veins and dotted with white spots along the margins, signaling their toxicity to potential threats.

MigratoryPollinatorColorful
Monarch reference1 / 7
Sid Mosdell from New Zealand / CC BY 2.0 · cc-by
—observations
—countries
—peak records
Least ConcernConservation statusIUCN Red List categoriesLCNTVUENCREWEXLeast ConcernRed List categories, explained →
Key facts
Diet & preyMilkweed foliage, Flower nectar
Predators
  • Grosbeaks
  • Orioles
  • Spiders
ThreatsHabitat loss, herbicide use destroying milkweed, pesticides, and climate change
HabitatsFields, meadows, roadsides, gardens, and overwintering fir or eucalyptus groves
Life span2 to 6 weeks for summer adults; up to 8 to 9 months for overwintering generation
Classification
  1. OrderLepidoptera
  2. FamilyNymphalidae
  3. GenusDanaus
  4. SpeciesDanaus plexippus
Range & activity
Range data is not available yet.
Safe observation
Interaction riskHigh
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is high
Contains cardiac glycosides sequestered from milkweed; safe to observe but toxic if ingested by pets.
What to notice
Recognized by vibrant orange wings with thick black veins and white-spotted black borders.
Support conservation
Observe from a respectful distance without touching delicate wings or disturbing roosting clusters.
Responsible observation
  • Plant Native Milkweed: Grow local milkweed species to supply essential larval food and egg sites.
  • Avoid Pesticides: Eliminate garden chemicals that poison caterpillars and foraging adults.
  • Maintain Nectar Sources: Plant late-blooming flowers to fuel adult butterflies during autumn migration.
Related species
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Mystic Meadows

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