Synonyms for Yellowhammer (same or very similar meaning)
WordNet sense 1 (large flicker of eastern North America with a red neck and yellow undersurface to wings and tail):
yellow-shafted flicker, Colaptes auratusWordNet sense 2 (European bunting the male being bright yellow):
Emberiza citrinella, yellow buntingFrom the ODE community, based on WordNetadd/edit