Flamingos (here the Greater Flamingo) can get as tall as 1.4 m, have a weigh up to 3.5 kg, and are still capable flyers. These crimson birds can actually have a wingspan up to 1.5 m!
I really like flamingos for their aesthetics and their beauty but also for their symbolic meanings. For instance in Egyptian mythology they were seen as creatures associated with the sun god, Ra. Ra, like the sun, is said to experience the cyclical process of death and rebirth each day. This connects him to the legends of the phoenix, the mythological crimson bird, associated very strongly with the sun. I could be thought then that this legend is possibly inspired by the "flaming" flamingo.