There are some who want to replace it with the flamingo, a bird more associated with the Sunshine State, though flamingos have been absent from the state until just recently.
Without wading too far into this controversy, let me say that the mockingbird is a splendid creature with an array of sounds that amaze and baffle. It finds a high branch on which to perch and sing its heart out. It has my vote, in case anyone asks for it.
(Northern mockingbird, credit Bob Baker via Cornell Bird Lab)