wildlife

Great crested grebe Podiceps cristatus male with erect crest

Great spotted woodpecker Dendrocopos major on side of a tree, ready to drill for insects

Great Tit Parus major on a tree branch with grasses behind

Greater flamingo Phoenicopterus roseus standing on one leg cut to white

Green woodpecker Picus viridis perched on a tree trunk

Grey heron Ardea cinerea quick sketch, standing on one leg in a river

Grey heron Ardea cinerea wading ankle deep in a river with reeds behind

Grey partridge Perdix perdix cut to white with one foot raised

Dipper eating aquatic invertebrate

Grey wagtail Motacilla cinerea breeding male stood on a mossy stone in a stream

Group of domestic ducks and geese including the Muscovy duck

Hen Gallus gallus domesticus egg sitting in a green field with meadow flowers and butterflies, used for packaging

Edier duck Somateria mollissima pair with chicks in rainy coastal scene male swimming

Herring gull Larus argentatus eating a chip from the road in a seaside urban setting

Goldcrest Regulus regulus upside down on some dried twigs showing the yellow head crest clearly

House martin Delichon urbicum coming to feed chicks in a nest under the eaves of a roof, small vignette

Golden eagle Aquila chrysaetos

Dabchick or Little grebe pair Tachybaptus ruficollis

Stylized diagram of the skeelton of a duck

Stylized diagram of the development of a duck egg from being laid until after hatching Day one yolk held in place with chalaza, germinal disc where fertilized chick starts to grow

Stylized diagram of the development of a duck egg from being laid until after hatching day twelve feathers start to show eye covered with lid claws formed

Stylized diagram of the development of a duck egg from being laid until after hatching Day 27 hatchling squashed inside egg ready to hatch, air cell still shows

Stylized diagram of the development of a duck egg from being laid until after hatching day five embryo separates from the yolk, blood vessel network grows and branchesm eye starts to get a colour.

Stylized diagram of the development of a duck egg from being laid until after hatching day eight blood vessels carry waste and oxygen, eyelids start to cover eye, beak and egg tooth more clear.