Goldeneye
A medium-sized diving duck, the goldeneye can mainly be spotted in winter when birds fly in from Northern Europe. Conservation efforts have helped small numbers of these birds to nest in Scotland.
Goldfinch
The striking red crown, golden back, and bright yellow wings of the goldfinch make it one of our prettiest garden birds. It happily visits birdtables and feeders across the UK.
Goosander
The streamlined goosander is a handsome bird and a great fisher - its long, serrated bill helps it to catch and hold its slippery fish prey. It nests in riverbank trees, but can be seen on lakes and reservoirs in winter.
Goose barnacle
Goose barnacles often wash up on our shores attached to flotsam after big storms.
Gorse shieldbug
As the name suggests, this large shieldbug is often found on gorse bushes.
Goshawk
Known as the phantom of the forest, goshawks can fly through the trees at up to 40km per hour as they hunt birds and small mammals.
Grass snake
The grass snake is our longest snake, but don't worry if you find one in the compost heap - it's harmless! Look out for this green and yellow beauty in grasslands and wetlands, too.
Grass-of-parnassus
The stately Grass-of-parnassus displays pretty, white flowers with green stripes. Once widespread, it is now declining as its wetland habitats are disappearing.
Grasshopper warbler
This small summer migrant travels from Africa to breed in the reedbeds of the UK. Rarely seen but given away by its insect like trilling call
Grasshopper warbler
This small summer migrant travels from Africa to breed in the reedbeds of the UK. Rarely seen but given away by its insect like trilling call; the movement of the head during calling makes it tricky to pinpoint the exact location of singing perch.
Grayling
The grayling is one of our largest brown butterflies and a master of disguise - its cryptic colouring helps to camouflage it against bare earth and stones in its coastal habitats and on inland heathlands.
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.