adar gyddf-felyn

== Welsh == === Etymology === Literally, “yellow-throated birds”. === Noun === adar gyddf-felyn (plural, singular aderyn gyddf-felyn m) yellowthroats (Geothlypis spp.) ==== Derived terms ==== === Mutation === === Further reading === Cymdeithas Edward Llwyd (2018), “Y Bywiadur”, in Llên natur‎[1], retrieved 7 October 2025.