Great crested grebe with material for nest-building
Blue tit taking off from nest hole in nestbox
Common house martin leaving nest
Common moorhens nesting
Male and female spotted flycatchers
Spanish sparrows
Eurasian nuthatch arriving at nest hole in oak tree
Common cormorant breeding tree
Ruff male displaying to female
Gentoo penguin
Little owl mating couple
Sociable weavers at their nest
Western grebe with egg
Caspian terns nesting
Chinstrap penguins nesting
Little tern eggs
Western grebe on its nest
White storks courting
Pied avocet on nest
Great spotted woodpecker and chick
Nesting red-billed hornbill
Black-browed albatrosses with their young
Ostrich with eggs
Black-legged kittiwakes
Gentoo penguins pair bonding
Scotland, breeding Great crested grebe
Gentoo penguins
Caspian terns nesting, aerial view
Chinstrap penguins on nests
Chinstrap penguins
Atlantic puffin
Adelie penguin nest in Antarctica, 1911
Cape gannet feeding its chick
Male pheasant displaying
Eurasian spoonbill breeding plumage
Little bustard male displaying
Antarctic skua with gentoo penguin egg
Antarctic skua steeling gentoo penguin egg
Chinstrap penguin breeding colony
Cattle egrets feeding around cattle
American robin nest
Adelie penguins in Antarctica, 1911
Common tern
Common swifts
White Storks Nesting
Short-toed snake eagle
Male yellowhammer
Red-whiskered bulbul on nest
Common murres
Male ruff in breeding plumage
Hoopoe feeding chicks
Little owl chicks
Little owl chick
Light-mantled albatross nesting
Snow petrel and chick
Wandering albatross egg
Chinstrap penguins with chicks
Northern gannet colony, Bass rock, Scotland
Young northern gannet, Bass Rock, Scotland
Great cormorants nesting
Pied avocet turning eggs on the nest
Mendelian inheritance chart
Wasp nest
Nesting gentoo penguins
A Ptarmigans nest on the Greenland tundra
Snowy owl
White-tailed eagle in flight
Masses of red kites in flight
Common puffin close to burrow in coastal turf
Red kites in flight in spring
Male common linnet perching on a bramble branch
Male great bustard beginning to display
House sparrows feeding at garden feeder
Great tit
Male common shelduck
Chiloe wigeons
Cape teal
Goldfinch
Eurasian nuthatch feeding
Bearded reedling feeding
Little egret feeding
Little egret in flight
Oystercatcher with damaged beak
Flock of oystercatchers in flight
Female stonechat
Woodland bird-feeder with feeding goldfinches and siskins
Goldfinches, siskins, and lesser redpolls feeding
Eurasian collared dove with nesting material
Greylag goose coming in to land
Male common reed bunting in flight
Male stonechat
Dunnock
Common snipe
Black-headed gull in winter plumage
Sand martins breeding colony
Squacco heron in breeding plumage
Common cormorants roosting in dead tree
Griffon vulture in flight
Alpine chough perched on rock outcrop
Alpine chough in flight
Sand martin in flight around breeding site
Sandwich tern in flight
Common tern in flight
Peregrine falcon
Crested barbet leaving nest
Puma cub with its mother
Buff-tailed bumblebees mating
Masked rabbitfish pair
Kangaroo joey
Ringed seal pup
Crested barbet inspecting cavity nest
Mantled guereza mother and baby
Turnstone feeding
Mute swan
Group of turnstones in winter plumage
Great reed warbler male
Pair of yellow-billed oxpeckers at their nest
Hawksbill turtle
Leatherback turtle
An Osprey, Pandion haliaetus, takes flight from a large nest made of sticks in the Atchafalaya Basin of south Lousiana, United States.
An Osprey, Pandion haliaetus, perches on a nest in the Atchafalaya Basin of south Lousiana, United States.
An Osprey, Pandion haliaetus, lands on a large nest made of sticks in the Atchafalaya Basin of south Lousiana, United States.
Grey heron in flight
Pied avocet nest with 3 eggs
Upland goose female and male
Emperor penguin and chick
Emperor penguin grooming its chick
Emperor penguin feeding its chick
Emperor penguin and chick grooming
Emperor penguins and chicks
Blackbird mother feeding a fledgling
Blue-tailed bee-eaters mating
Indian river terns preening
Pied avocet pair mating
Little owl at a nesting site
Little owl
Common sandpipers, 19th century artwork
Ringed plover newly hatched chick
Wandering albatross pair nesting
Grey-headed albatross and chick
Snowy owl in flight
Alpine chough
Blue-gray tanager
Verreaux's sifaka mother and baby
Triplefin blennies
African lion in oestrus
Crane flies mating
Treehopper larvae and adults
Southern elephant seal pup
Hairy dragonflies mating