The Bennu is the Egyptian correspondence to the Phoenix. It is said to be the soul of the sun God Ra.
According to Egyptian myth the Bennu created itself from a fire burning on a holy tree in the temple of Ra. Other versions say Bennu burst forth from the heart of Osiris.
The book of the dead says, "I am the Bennu bird, the heart-soul of Ra, the Guide of the Gods to the Tuat."