Mae’n hawdd iawn methu’r glas y dorlan trawiadol heb fod yn wyliwr craff iawn! Mae’r aderyn hardd yma’n hawdd ei adnabod diolch i’w liwiau glas llachar a chopr metalig. Mae’n gwibio ar hyd glan yr…

Mae môr-gyllyll yn perthyn i ystifflogod ac octopysau – grŵp o folysgiaid sy’n cael eu hadnabod fel seffalopodau. Efallai eich bod chi wedi gweld y gragen fewnol sialcog, o’r enw asgwrn cyllell,…

Sometimes called 'Marsh samphire', wild common glasswort is often gathered and eaten. It grows on saltmarshes and beaches, sometimes forming big, green, fleshy carpets.

Despite its name, Ground-ivy is actually a member of the dead-nettle family. It is a clump-forming, aromatic plant that likes woodlands, hedgerows and damp places.

The ptarmigan is a master of disguise - matching its Highland surroundings perfectly by turning snow-white in winter and rock-grey in summer. It is confined to the mountains of Scotland, so is…