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,…

A climbing plant of hedgerows and woodlands, Black bryony produces greenish flowers in summer and red, shiny berries in autumn. It is a poisonous plant.

A climbing plant of hedgerows and woodlands, White bryony produces greenish flowers in summer and red, shiny berries in winter. It is a poisonous plant.

The nuthatch is a tit-sized, grey and rust-coloured bird that can be easily spotted climbing headfirst down tree trunks in woodlands and parks.

Escaped or intentionally freed from fur farms in the 1960s, the American mink is now well established in the UK. Its carnivorous nature is a threat to our native water vole and seabird populations…

The common shieldbug was once restricted to Southern England, but has since been moving northwards and is now quite widespread. It can be found in all kinds of habitats from gardens to farms.

A fierce pirate of the sea, the great skua is renowned for stealing fish from other seabirds and dive-bombing anyone that comes near its nests. It breeds on the Scottish Isles.

A true wildlife 'hotel', Honeysuckle is a climbing plant that caters for all kinds of wildlife: it provides nectar for insects, prey for bats, nest sites for birds and food for small…

Swifts spend most of their lives flying – even sleeping, eating and drinking – only ever landing to nest. They like to nest in older buildings in small holes in roof spaces.

A climbing plant of woodlands, hedgerows, riverbanks and gardens, Hedge bindweed can become a pest in some places. It has large, trumpet-shaped, white flowers and arrow-shaped leaves.