Butterflies Dinosaur Train : Season 3 Episode 20

One morning at the family nest, Don befriends a butterfly that he names Dan. Don, Buddy, Tiny and Shiny watch Dan and three of his "sibling" butterflies fly around until suddenly they disappear, leaving Dan all alone. Don feels for the separated butterfly and vows to re-unite him with his siblings. After Mom and Dad give a quick lesson about butterfly camouflage, Don leads his own siblings all around the nest area searching for Dan the Butterfly's lost "sisters and brother." The whole time, Don keeps an eye on Dan, who camouflages himself when any threat (birds or a frog) are nearby.