Answering to the Old Ones, two Ornithoid explorers, Korob and Sylvia, set up an observation outpost on Pyris VII during mid-23rd century. They encountered the USS Enterprise and held members of the crew for study in 2267. Both died after James T. Kirk destroyed their means of support in an effort to escape capture. (TOS: "Catspaw" ) In the 24th century, information about the Ornithoids was used in schools as teaching aids in comparative xenobiology lessons. (DS9: "A Man Alone", "The Nagus")