penfelyn yr eithin

== Welsh == === Etymology === Literally, “yellow-head of the gorse”. === Noun === penfelyn yr eithin m (plural penfelynion melyn) yellowhammer (Emberiza citrinella) ==== Synonyms ==== bras melyn === Mutation === === Further reading === R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke, et al., editors (1950–present), “penfelyn yr eithin”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies