Such brilliant colors. Those brilliant colors are there for a reason. Instead of being camouflaged and blending in to her surroundings, Greeny-Head takes the "BACK OFF!" approach to life. This is because a monarch caterpillar feeds solely on Common Milkweed (Asclepias syrica), which has a chemical compound in its leaves that makes her poisonous to any would-be predators. And showing that poisonous side of her off helps keep her safe from caterpillar eating birds.
Here you can see how much of the leaf she has eaten overnight. I took this photo on Sunday morning, and just Saturday evening I took a drive to pick her another milkweed plant.
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The results of her leaf munching is a healthy pile of caterpillar droppings on the leaf below. Always a happy sight when you're raising a caterpillar.
What a cute caterpillar! Perfect shot!
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