Mynd i fyd yr adar mae John Hardy ar yr ymweliad hwn ag archif Radio Cymru. John Hardy focuses on birds on this visit to the Radio Cymru archive.
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Mynd i fyd yr adar mae John Hardy ar yr ymweliad hwn ag archif Radio Cymru. John Hardy focuses on birds on this visit to the Radio Cymru archive.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
