Oops! Missed St David’s Day. To make amends here is a post about Welsh.
My friend JDL recently told me about some pronunciations of Welsh he had found online. The page in question is here Listen to the <d> at the end of the words Aseiniad, Traethawd (hir) and Credyd. If I were forced to provide transcriptions I would write t for the first two and d̥ for the third. It also sounds to me as if the intervocalic consonant in the last word is voiceless too.
What’s going on here? Is this an idiosyncratic speaker, or is this a recognised phenomenon of some Welsh accents? If the latter, then it’s news to me, but I don’t pretend to be any sort of expert on Welsh.