What kind of animals are the charters from Harvey beaks?

In the animated series "Harvey Beaks," the characters are anthropomorphic animals, primarily featuring a mix of various species. The main character, Harvey, is a small, green bird, while his friends, Fee and Foo, are mischievous twin creatures resembling a mix of birds and other whimsical animals. The show blends elements of fantasy and adventure, showcasing these charming characters in a vibrant, nature-inspired setting. Overall, the series presents a diverse cast of characters, each with unique traits and personalities.