I visited Hortus Botanicus the other day, it’s a botanic garden in Amsterdam and one of the oldest in the world (founded 1638). There are more than 4,000 plant species to see, but I spent most of my time there in a small butterfly greenhouse 🙂
(1) The Julia butterfly (Dryas iulia) originates from South and Central America but because of the bright orange color it’s often called “The flying Dutchman” as orange is the national color of the Netherlands.
(2) The Zebra longwing (Heliconius charithonia) can make a creaking sound by wiggling its body. They do this when disturbed but even though I would’ve liked to hear it, I didn’t want to alarm him so I still don’t know what it sounds like.