Crotalaria Cunninghami: Home to many wonders of nature. Very few people know that the flowers of a tree are in the shape of beautiful birds. Yes, beautiful birds are hummingbirds. These are very small. But there are plants on earth that are as beautiful as hummingbirds and flower-shaped plants. These plants, which delight nature lovers, are also known as the Green Birdflower, the Regal Birdflower (Birdflower Ratulpo), and the Parrot Pea. This wonderful plant belongs to the legume family. The scientific name of this plant is Crotaleria cunninghami. They are named after the 19th-century botanist Alan Cunningham.