What is the meaning of Firebird?

A scarlet tanager, Piranga olivacea. (This species is now classified as belonging to the cardinal family: Cardinalidae)

A Baltimore oriole, Icterus galbula.

A vermilion flycatcher, Pyrocephalus rubinus.

A magical and prophetic glowing or burning bird from a faraway land, which is both a blessing and a harbinger of doom to its captor

Source: wiktionary.org