Here's what National Geographic says -
Monarch Butterfly Range. Fast Facts.
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Today was a good case in point. Three Monarchs emerged. All perfect.
Here are their wingspan sizes -
- Male - wingspan 7.5cm
- Male - wingspan 9.5cm
- Female - wingspan 10.5cm
Today's small male was probably the smallest I have seen.
Dainty, yet quite perfect. Nature always gets it right, yes?