All birds have wings, beaks, and feathers.
However some are very special-
Such as the parrot, the hummingbird, the tanager, and the eagle.
On the other claw there is the seagull.
Which just proves that all birds are equal but some are more equal than others.
(Note: Before all you birders get your feathers ruffled, this worder realizes that there is no such thing as a “seagull” but rather many different species of gulls yet the rhyme was superior adding sea)