Phoenix

The phoenix is a large swan-sized scarlet bird with red and gold
plumage, along with a golden beak and talons, black eyes, and a tail as
long as a peacock's. Its scarlet feathers glow faintly in darkness,
while its golden tail feathers are hot to the touch. Phoenixes are known
for nesting on mountain peaks. They are gentle herbivores and are not
known for fighting. As phoenixes approach their Burning Day
they resemble a half-plucked turkey. Also, their eyes become dull,
their feathers start to fall out, and it begins to make gagging noises.
Then the bird suddenly bursts into flames only to rise from the ashes
shortly after. In a number of days, they grow back to full size.  Thanks to this ability, phoenixes live to an immense age.