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,…

This striking day-flying moth is named after a 16th century witch.

This unique fungus is one of the most sought after spring fungi of them all.

A winter visitor, the well-travelled Bewick's swan is the smallest of our swans. It has more black on its yellow-and-black bill than the whooper swan. Look out for it around Eastern England…

The shy and retiring bittern is a master of blending in and can be very difficult to spot in its reedbed home. It does sound like a booming foghorn, however, when it calls, so can often be heard…

It is so easy to miss this clever little moth. It is a master of disguise, blending in perfectly as it looks just like the twig of a birch tree! Flying only at night, the buff-tip moth can be seen…