"The Monarch is as important to the Butterfly Station as the T.rex is to Jurassic Park."
-Eric Airhienbuwa, 7/19/2024
The Monarch (Danaus plexippus)
Life cycle
The life cycle of all butterflies starts with an egg. Monarch butterflies lay their eggs on the underside of milkweed leaves. The caterpillars stay in their eggs for about 3-8 days before they hatch. These eggs are a pale yellow color and have a pointed top. Some say they look football shaped.
When the eggs hatch, the caterpillar eats the shell of it's egg and moves onto milkweed leaves. These caterpillars are characterized by their yellow, black and white stripes. The caterpillar stage lasts from 7-17 days.
Here are some fun facts about these caterpillars!
-They eat almost 200 times their weight from the time they hatch to the time they go into their chrysalis .
-They start out around 2 millimeters and end up about 60 millimeters.
-Eating milkweed makes them poisonous to birds.
Click here to learn more about milkweed! Milkweed
The next part of the butterfly life cycle is what we like to call the J-shape. When caterpillars climb up and hang upside down in a J-shape, it means they are ready to go into their chrysalises. This stage lasts for around 24 hours until the caterpillar sheds its skin and becomes a chrysalis.
Below is a time-lapse of a monarch going from caterpillar to chrysalis
The chrysalis does not move from when it forms. It is hung from strings the caterpillar spun to secure it. The monarch chrysalis is a pale green color with a golden ring around the upper part of the chrysalis. This is where the monarch's name comes from because settlers in America thought the golden ring looked like a crown. When the chrysalis is about to hatch, it darkens and eventually becomes transparent. You can see the wings of the butterfly and shortly afterward they will hatch. This stage lasts around 8-12 days.
Below is a time-lapse video of a monarch hatching from its chrysalis.
https://drive.google.com/file/d/1pu4NdAUnJ6ATjlaetEykNHCCitWQ8nsZ/view?usp=sharing
After the chrysalis hatches, the butterfly needs to dry it's wings in order for it to be able to fly. It also releases what we call "wing juice" which kind of looks like drops of fruit punch. It is completely natural and doesn't hurt the butterfly. When the butterfly begins flapping it's wings a lot and trying to fly around, that is when we know it is ready to be released into our butterfly house!
Here are some fun facts about monarch butterflies!
-They are orange, a bright color, which means danger in nature. This is to show that they are poisonous and that birds/other predators should not eat them
-These butterflies migrate all the way to Mexico every year to spend the winter there. The reason is because it's too cold in most of the United States for these butterflies in the winter. They end up in trees where they wait out the winter with thousands of other monarchs until it is warm enough to return home. On the way back they lay more eggs and that's where caterpillars come from in the springtime.
-The male monarchs have a dot on the bottom part of each wing which females do not. This is how we can tell them apart.
A female monarch butterfly
A male monarch butterfly
Habitat: Open Woodlands
Food: Plant Material (Nectar)
Nesting: Leaves (Milkweed)
Behavior: Plant Forager (Pollinator)
Conservation: Low Concern (Population Stable) (Global Population: Vulnerable)
Native Status: Native