Gavin Owen o atyniad Pili Palas sy'n sôn am ostyngiad yn niferoedd y glöynnod byw. Zoo-keeper Gavin Owen joins Aled to talk about a drop in butterfly numbers.
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Gavin Owen o atyniad Pili Palas sy'n sôn am ostyngiad yn niferoedd y glöynnod byw. Zoo-keeper Gavin Owen joins Aled to talk about a drop in butterfly numbers.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
