What is the meaning of Yellowhammer?

A passerine bird, Emberiza citrinella, of western Eurasia, which is mainly yellow in colour.

The northern flicker, Colaptes auratus, a woodpecker with yellow underwings and undertail and often other yellowish underparts; one of its ways of feeding is to hammer on trees to find insects (adults and larvae) to eat.

A native or resident of the American state of Alabama.

Source: wiktionary.org