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Monarch Butterfly Annual Cycle
Image
Annual Cycle
Population Size Announced
Article
Annual Population News Announced
Monarch Butterflies at El Rosario Sanctuary in Mexico
Photo Gallery
El Rosario Sanctuary
Monarch Butterflies at El Rosario Sanctuary in Mexico
Slideshow
How Many Monarchs in Mexico?
Aerial View of Monarch Butterflies at El Rosario Sanctuary in Mexico
Teaching Suggestions
How Many Monarchs in Mexico?
Image of monarch butterflies roosting in a pine tree.
Slideshow
Magic of Monarch Migration
Monarch Butterfly Range Map
Map
Migration and Range
Graph: Monarch Butterfly Winter Population Size
Image
Monarch Butterfly Population
Image of monarch butterflies roosting in an oyamel tree in Mexico
Slideshow
Monarch Butterfly Sanctuary Tour
Monarch Butterfly Sanctuary Map
Map
Monarch Winter Sanctuaries
Monarchs, Mountains, and Moisture
Slideshow
Monarchs, Mountains, and Moisture
Graph: Compare Monarch Butterfly Winter Population Size
Image
Population: Compare Winters
Stories from Mexico
Article
Stories from Mexico
Image of monarch butterflies roosting in Mexico
Slideshow
Surviving the Winter on Stored Energy
Temperature and Winter Survival
Slideshow
Temperature and Survival
The Monarch's Winter Habitat
Slideshow
The Monarch's Winter Habitat
Image of girl holding a monarch butterfly.
Article
True Tagging Stories
Image by Bruce Morrison
Slideshow
Why Overnight Roosts?
How High Do Monarchs Fly?
Photo Gallery
How High Do Monarchs Fly?
Image of a tagged monarch butterfly
Photo Gallery
Tiny Tags, Big Discoveries
Too Cold to Fly?
Slideshow
Too Cold to Fly?
About Fall Monarch Migration Maps
Map
About Fall Maps
Monarch Butterfly by Elizabeth Howard
Article
Basking
Satellite image of Hurricane Katrina
Article
Hurricane Stories
Migration Map Archives
Map
Migration Map Archives
Facts About Monarch Butterflies
Facts
Monarch Butterflies
Monarch Butterfly Nectaring on Spring Blossoms
Article
Nectar and Migration
Population Distribution
Map
Population Distribution
The Overnight Roost
Article
Roosts: Scientific Findings
Citizen Science: Monarch Butterfly Migration
Slideshow
Citizen Science
How You Can Help Monarch Butterflies
Facts
Conservation: How You Can Help
Monarch Butterfly Wings
Photo Gallery
Monarch Wings Over Time
Image of a Monarch Butterfly in Flight
Article
Signs of Fall Migration
Chart: Monarch Butterfly Life Cycle
Image
Life Cycle
Live Wind Map
Map
Live Wind Map
A Dozen Butterfly Eggs
Photo Gallery
A Dozen Butterfly Eggs
Monarch Identification Infographic
Infographic
Can You ID?
Energy Cost of Flight
Article
Energy Cost of Flight
The cremaster
Article
From Caterpillar to Chrysalis
Image of Monarch Butterfly Laying Eggs on Milkweed
Slideshow
How Do Monarchs Find Milkweed?
Monarch Butterfly Egg
Slideshow
How Does the Monarch Population Grow?
Monarch Arrival and Mexican Traditions
Slideshow
Monarch Arrival and Mexican Traditions
Mystery: Chrysalids Under a Rock
Article
Mystery: Under a Rock
Nectar and Migration
Slideshow
Nectar and Migration
Monarch butterflies in Mexico in flight
Slideshow
Spring Migration: A Race Against Time
Temperature and Winter Survival
Teaching Suggestions
Temperature and Winter Survival
Report Your Monarch Observations
Slideshow
Track Migration - What to Report
Monarch Butterfly Migration Map: Two Fall Migration Flyways
Map
Two Fall Migration Flyways
Image of monarch butterfly caterpillars
Slideshow
What Do Monarch Larvae Do?
Monarch Larva
Photo Gallery
What Do Monarch Larvae Do?
Students with Monarch Butterflies
Photo Gallery
Who's Watching Monarchs?
Graph showing how many eggs one monarch butterfly can lay
Image
One Monarch, How Many Eggs?