And now for the surprise:
Why am I happy that this poor little bush that was so full and lush just a little while ago is now almost bare of leaves?
Because there are a bunch of these little guys munching on it and that's exactly why I planted it! These are caterpillars that will become monarch butterflies and this is a type of butterfly bush (one of the milkweed types) - it's their favorite food.
Just another harbinger of Spring!