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  • Viceroy Butterfly

    Monarch or Viceroy Butterfly?

    V is for Viceroy. Look for the V on the hind wings, a single black line that crosses all the others.

  • Milkweeds

    Many Milkweeds For Monarchs

    Here are just three possible species of milkweed for you and monarchs to choose from. Plant some milkweed for monarchs today!

  • Monarch egg

    Monarch Life Starts As An Egg

    Monarch butterflies begin life in a tiny egg laid on the underside of a milkweed leaf. The egg hatches after about 4 days.

  • Monarch caterpillar

    Little Larva, Big Appetite!

    Monarch caterpillars feed exclusively on various milkweed species. They grow from 2 mm to 45 mm in length in only 14 days!

  • Monarch chrysalis

    From Caterpillar to Adult

    It takes 10-14 days for a monarch caterpillar to develop into an adult. Inside the chrysalis, the monarch is called a pupa at this stage.

About the NWRS

National Wildlife Refuge System


The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America’s fish, wildlife, and plants.

Learn more about the NWRS  

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Page Photo Credits — All photos courtesy of USFWS unless otherwise noted.
Last Updated: Jun 29, 2015
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