
Goosander Mergus merganser pair on lake
Goosander or Common merganser Mergus merganser on a lake with sundew, rocks and a beach in the foreground, scrubby vegetation behind, set in northern Wales uplands.

Goshawk Accipiter gentilis
Goshawk Accipiter gentilis looking fierce cut to white

Great crested grebe Podiceps cristatus
Great crested grebe Podiceps cristatus male with erect crest

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

Great tit Parus major
Great Tit Parus major on a tree branch with grasses behind

Greater flamingo Phoenicopterus roseus
Greater flamingo Phoenicopterus roseus standing on one leg cut to white

Green woodpecker Picus viridis
Green woodpecker Picus viridis perched on a tree trunk

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

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

Common wood pigeon Columba palumbus
Common wood pigeon Columba palumbus showing pink and green feathers

Diagram of the internal anatomy of a duck
Stylized diagram of the internal organs and anatomy of a duck within a pen outline

Comparison of egg sizes
Pencil sketch comparing size of humming bird, ostrich, hen, and elephant bird

Coot Fulica atra
Coot Fulica atra

Corncrake Crex crex
Corncrake Crex crex standing on a large stone looking alert with grass at its feet

Cuckoo Cuculus canorus
Cuckoo Cuculus canorus

Curlew Numenius arquata
Curlew Numenius arquata

Dabchick pair Tachybaptus ruficollis
Dabchick or Little grebe pair Tachybaptus ruficollis

Diagram of a duck skeleton
Stylized diagram of the skeelton of a duck

Diagram of Duck Egg development Day 1
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

Diagram of Duck Egg development Day 12
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

Diagram of Duck Egg development Day 27
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

Diagram of Duck Egg development Day 5
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.

Diagram of Duck Egg development Day 8
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.

Common Goldeneye Bucephala clangula male displaying
Common Goldeneye Bucephala clangula male displaying