Corsydd
Mae cors yn safle eithriadol wlyb ac mae’n gallu cael ei galw’n fignen, siglen neu wern hefyd. Mae’r pridd yn yr ardaloedd hyn yn dywyll iawn ac yn cael ei alw’n fawn.
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Water vole by Terry Whittaker/2020VISION
Chwilio
Teal
The teal is a pretty, little dabbling duck, which can be easily spotted in winter on reservoirs, gravel pits, and flooded meadows. Watching flocks of this bird wheel through a winter sky is a true…
Dog whelk
This sea snail is abundant on rocky shores around the UK. It is an active predator, feasting on mussels and barnacles before retreating to crevices to rest.
Violet ground beetle
Violet ground beetles are active predators, coming out at night to hunt slugs and other invertebrates in gardens, woodlands and meadows.
Long-tailed duck
This dainty seaduck is a winter visitor to our coasts, particularly in northern and eastern Scotland.
Purple laver
This purply-brown seaweed is a common feature on our rocky shores and on our dinner plates.
How to make a Christmas wreath for birds
With food, water and shelter scarce over the winter months, give your garden birds a treat with an edible Christmas wreath.
Common octopus
The common octopus is a highly intelligent, active predator. It even has a secret weapon - special glands produce a venom that it uses to incapacitate its prey!
Herald
This unmistakable moth spends the winter as an adult, tucked away in a sheltered spot like a cave or outbuilding.
Water pipit
This streaky brown bird is a winter visitor, occasionally found walking around the muddy margins of marshes.
Great black-backed gull
This huge gull can be seen around most of the UK's coasts in summer, with some venturing inland in winter.
Long-snouted seahorse
One of 2 seahorses found in UK seas, long snouted seahorses are recognisable by their longer snout and fleshy "mane".