You can almost imagine this ruby-throated hummingbird asking, “Do you think my beak is too big?” Of course not, it’s just perfect! Fun fact about hummingbirds from worldofhummingbirds.com: A hummingbird’s brain is approximately 4.2% of its body weight, the largest proportion in the bird kingdom. Hummingbirds are very smart and they can remember every flower they have been to, and how long it will take a flower to refill.