Firebird

A Firebird was an avian lifeform that lived on the planet Vulcan. It was considered a very rare species of bird where it was said that after hatching that they lived only for a few moments. However, during its short existence, it lived a life filled with more joy than a hundred beings and greater than what they could experience in their lifetimes even if they were added together. As such, their reputation meant that beings from the far reaches of space fought and killed for the chance to see a Vulcan Firebird. Typically, it took anywhere between three hundred Earth years or a thousand for their eggs to hatch. The reason for the difference in hatching was due to Firebirds being unable to emerge from their eggs on their own as they required another being to nurture them to life. (SS ENT (Hoshi's Gift))