Never Bird

Origin
The Never Bird is a fairly prominent animal character in J. M. Barrie's Peter and Wendy, but is mentioned only in passing in the play Peter Pan, and not at all in the various film adaptations. She rescues Peter from drowning, when he is stranded on Marooner's Rock, unable to fly, as the tide is rising. She lets him use her watertight nest as a lifeboat, enabling him to sail to the mainland.