Earth's mythologies are filled with stories of bird people. These may refer to an actual race that did interact with Earth in a distant past. Most of these bird people, like many other species, come from the Lyra Constellation.
Lyssa Royal: "There is one group of entities who are mammals, yet are oriented toward Lyran principles (Lyra being the mother group), and whose features are very different from humanoid. One particular group resembles what you call alien. The body type of these entities would be what you call ectomorph, very thin, almost frail and birdlike. The facial structure is more angular, sharper, resembling a bird, though these are still mammals. The eyes are birdlike. The hair is not feathered, but is of a different quality that can resemble feathers, if you are not touching it or in close proximity to it. It was also ceremoniously adorned in a certain way that made it look like feathers. This was not intentional but simply their own expression. These entities are very cool and intellectual. They consider themselves primarily scientists, explorers and philosophers. They do not engage in galactic politics, but they do travel and visit. They have had interaction here on your Earth during some of the most influential civilizations - Sumerian, Egyptian. There was interaction in what you call the Indus Valley.
These entities have entered, in a backhanded way, the mythology of your people. They are not bird creatures; they are mammals who are birdlike in appearance. We have not talked about these entities at all up until this point because we've limited our discussion to what matters to you now on the Earth plane. This is a curiosity, but at least for now they do not represent something significant you need to look at to continue your own unfoldment. "
[Lyssa Royal: Excerpt of "Galactic Family, An Overview of Genotypes"]
Note, however, that the Lyran bird-people porabably are not only people with bird-like features. In recent years, stories have emerged about blue avians. These blue avians allegedly are also humanoid, 8ft tall, with blue skin that is partly covered in feathers. They have a small beak instead of a mouth and nose.