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Find-the-Facts: Sample Sentences


  • Adult monarch butterflies eat a sweet liquid called “nectar.” Monarchs find the nectar in fresh flowers.
  • A flower only produces nectar when it is fresh. It’s a sign that a flower is no longer producing nectar when its petals lose their color, shrivel or fall from the flower.
  • Freezing temperatures can destroy most flowers quickly.
  • Monarch butterflies are cold-blooded. This means the monarch’s body temperature is largely controlled by the temperature of its environment.
  • Monarch butterflies are paralyzed by cold temperatures. They cannot fly unless their flight muscles are at least 55F (13C). The monarch’s flight muscles are located in its thorax, the middle section of its three-part body.
  • Monarchs can raise their body temperature in two ways. They can 1) bask in the sun and they can 2) shiver.
  • Generally, monarchs can only fly when the air temperature is above 60F (on a cloudy day) or as low as 50F (on a sunny day).
  • There are 4 stages in the monarch life cycle: egg, larva (or caterpillar), chrysalis, and adult. It takes about one month for a monarch to complete its life cycle.
  • Freezing temperatures can kill monarchs at any stage of the life cycle.
  • Monarch butterflies lay their eggs on milkweed. When the monarch egg hatches it becomes a caterpillar. Milkweed is the only food a monarch caterpillar can eat.
  • Monarch caterpillars prefer fresh milkweed. When milkweed plants become old, their leaves turn yellow, fade and fall from the plant.
  • Milkweed plants die back to the ground after freezing temperatures.