Dave Bevan / Juvenile Brown rats (Rattus norvegicus) raiding a chicken nest in a barn, filmed at night using an infra red camera, Carmarthenshire, Wales, UK, December.

Lynn M Stone / Free-range New Hampshire rooster, by corn pile in snow-covered field. Higganum, Connecticut, USA.

John Cancalosi / Free range hens (Gallus gallus domesticus) by their shed. Herefordshire, England, UK.

Ernie Janes / Bantam hen (Gallus gallus domesticus) close up sitting on chick, Norfolk, UK, April.

Ernie Janes / Five newly hatched chicks in a row

Mark Taylor / Portrait of a Partridge Pekin Bantam.

Ernie Janes / Farmyard chicken (Gallus gallus domesticus) free range, mixed breed, Norfolk, UK. Property released

Ernie Janes / Farmyard chickens (Gallus gallus domesticus) free range, mixed breed, two perched on tractor bonnet, Norfolk, UK. Property released

Ernie Janes / Farmyard chicken (Gallus gallus domesticus) free range, mixed breed, perched on fence, Norfolk, UK. Property released

Ernie Janes / Collecting free-range organic Chicken eggs (Gallus gallus domesticus) UK, September 2005

Ernie Janes / Collecting free-range organic Chicken eggs (Gallus gallus domesticus) UK, September 2005

Gary K. Smith / Domestic Welsummers bantam chicken (Gallus gallus domesticus) with one-day chicks, Norfolk, UK September

Georgette Douwma / A rescued battery hen. They often lack feathers when they come out of the battery barns. UK.

Georgette Douwma / Rescued battery hens with rooster. The chickens often lack feathers when they come out of the battery barns. UK.

Georgette Douwma / Cockerel (Gallus gallus domesticus) crowing in hen run, UK

LYNN M. STONE / Domestic Chicken, baby chick {Gallus gallus domesticus} USA

Jane Burton / Newly hatched Bantam chick {Gallus gallus domesticus}. Chick struggles out of the egg pushing with head and feet.

Jane Burton / Buff Bantam Hen {Gallus gallus domesticus} with nine of her ten chicks, 2-days-old. The tenth chick is under her

LYNN M. STONE / Red Dorking domestic chicken hen and cock {Gallus g domesticus} in snow, Iowa, USA.

LYNN M. STONE / Red Dorking domestic chicken cock and hen {Gallus gallus domesticus} in snow, Iowa, USA.

Pete Cairns / Domestic hen free range {Gallus gallus domesticus} Scotland, UK

Ernie Janes / Silver-laced Wyandotte hen, free range in garden

Neil Aldridge / Poultry farmer holds the carcasses of two hens, as well as the Red fox (Vulpes vulpes) that killed them. Although thousands of foxes are shot by farmers each year, this is the last fox this farmer sho...

David Fleetham / Bound chickens (Gallus gallus domesticus) for sale in a large open Indian market shortly after dawn in the town of Otavalo, Ecuador.

David Fleetham / Caged Chickens (Gallus gallus domesticus) for sale in large open Indian market in the town of Otavalo, Ecuador.

Ernie Janes / Silver-laced Wyandotte domestic hen, free range in garden with hybrid brown hens

Loic Poidevin / Black Chicken of Challans, Vendee, France. July.

Loic Poidevin / Black Chickens of Challans, rooster with four hens, Vendee, France. July.

Ernie Janes / Silver-laced wyandotte chicken, free range in garden. England, UK.

Phil Savoie / Brahma chicken rooster, Monmouthshire, Wales, UK, April.

Michael W. Richards / Chicken (Gallus gallus domesticus) dust bathing surrounded by chicks, Somerset, England, UK, August.

Tui De Roy / Feral chicken (Gallus gallus domesticus) cock, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chicks, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chick, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chicks, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chick, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Tui De Roy / Feral chicken (Gallus gallus domesticus) hen and chicks, these have reverted to ancestral type nearly identical to Red jungle fowl. Galapagos

Ingo Arndt / Ostrich egg {Struthio camelus} next to Chicken egg {Gallus gallus domesticus} for scale

Mark Taylor / Silkie Serama Cockerel.

Mark Taylor / Silkie Serama Cockerels.

Mark Taylor / Silkie serama chicken walking.

Mark Taylor / Silkie serama chicken.

Mark Taylor / Silkie serama chicken.

Mark Taylor / Silkie serama chicken.

Sylvain Cordier / Domestic hen and chicks in chicken coop, Alsace, France

Sylvain Cordier / Domestic hen chicks feeding in barn, France. December 2005.

Sylvain Cordier / Domestic chicken broilers feeding in barn, France. December 2005.

Lynn M. Stone / Free-range hen, Connecticut, USA.

Lynn M. Stone / Free-range rooster (breed: Polish), Connecticut, USA.

Lynn M Stone / Maran Rooster (blue copper variety), Massachusetts, USA

Lynn M Stone / Silver-laced bantam Brahma rooster, Terryville, Connecticut, USA

Lynn M Stone / Buff Brahma rooster, Tylerville, Connecticut, USA

Lynn M Stone / Rhode Island Red rooster, Old Lyme, Connecticut, USA

Mark Taylor / Tabby kitten, Smudge, 7 weeks, with a domestic hen chick.

Mark Taylor / Tabby kitten, Picasso, 7 weeks, with a domestic hen chick.

Michael W. Richards / Red fox (Vulpes vulpes) with dead chicken from farmyard, Somerset, UK, March.

Pete Oxford / Chicken nesting basket. Chang Naga headhunting Tribe. Tuensang district. Nagaland, North East India, October 2014.

Staffan Widstrand / Rooster (Gallus domesticus) in barn, Musteika Village, Lithuania, May 2015.

Lynn M Stone / Black and gold bantam brahma hen and rooster foraging among gourds in garden. Higganum. Connecticut, USA. November. Non-ex.

Lynn M Stone / Black cochin bantam rooster, Higganum, Connecticut, USA. Non-ex.

Lynn M Stone / Orpington rooster in snow-covered farm field, in front of old plow, Higganum, Connecticut, USA.

Lynn M Stone / Free-range maran (blue copper colour) rooster crowing, standing on log in snowy field, in front of old wooden out building, Higganum, Connecticut, USA.

Lynn M Stone / Bantam cochin rooster perched in barn window next to 'welcome' sign, Higganum, Connecticut, USA.

Lynn M Stone / Plymouth rock rooster (partridge color variety) standing in snow by old Coneflower stems, Higganum, Connecticut, USA,

Lynn M Stone / Large black australorp rooster in garden in autumn, Higganum, Connecticut, USA.

Lynn M Stone / Large black australorp in garden, next to pumpkin in autumn, Higganum, Connecticut, USA.

Lynn M Stone / Large black australorp crowing, perched on rock by old, wooden plough, autumn, Higganum, Connecticut, USA.

Lynn M Stone / Black cochin bantam rooster with hen, perched on a cornucopia basket of garden peppers, Higganum, Connecticut, USA.

Lynn M Stone / White rosecomb leghorn bantam hen standing by her clutch of eggs in straw, Higganum, Connecticut, USA.

Lynn M Stone / Buff brahma bantam gold and black hen with her clutch of eggs in straw, Higganum, Connecticut, USA.

Lynn M Stone / Black cochin bantam rooster on antique, wood-handled plough, Higganum, Connecticut, USA. Non-ex.

Lynn M Stone / Black cochin bantam rooster on antique, wood-handled plough, Higganum, Connecticut, USA. Non-ex.

Lynn M Stone / Free-range buff brahma bantam gold and black hen in autumn vegetation, Higganum, Connecticut, USA.

Lynn M Stone / Large black australorp rooster and hen in old garden, Higganum, Connecticut, USA.

Lynn M Stone / Black australorp rooster, in autumn, Higganum, Connecticut, USA.

Lynn M Stone / Buff brahma bantam (gold and black) rooster in green vegetation, Higganum, Connecticut, USA.

Lynn M Stone / Bantam Plymouth barred rock rooster flapping wings in late autumn foliage, Middletown, Connecticut, USA.

Lynn M Stone / Bantam black cochin rooster, perched on wooden handle of old hand plough, Middletown, Connecticut, USA.

Ernie Janes / Domestic chickens (Gallus gallus domesticus) dust bathing, Nepal. November.

Mark Taylor / Chocolate cat sitting next to chicken.

LYNN M. STONE / Black Mottled Cochin bantam rooster against background of Forsythia, April, Cheshire, Connecticut, USA

LYNN M. STONE / Black Mottled Cochin bantam rooster in daffodils, Cheshire, Connecticut, USA

LYNN M. STONE / Buff Bantam Cochin in Daffodils, Cheshire, Connecticut, USA

LYNN M. STONE / Black Mottled Cochin bantam rooster, against background of Forsythia, April, Cheshire, Connecticut, USA

Cheryl-Samantha Owen / Domestic Cockerel (Gallus gallus domesticus) Tanzania, East Africa.

Rob Cousins / Free range chickens at Laverstoke Park Farm, Hampshire, UK, September.

Ernie Janes / Free-range chicken on Norfolk smallholding, England, April.

Enrique Lopez-Tapia / Chicken about to be ceremonially sacrificed at wedding in the village of Ambeduco. Orango Island, Guinea-Bissau, December 2013.

Enrique Lopez-Tapia / Rooster about to be ceremonially sacrificed at wedding in the village of Ambeduco. Orango Island, Guinea-Bissau, December 2013.

Lynn M Stone / Blue-Laced Red Wyandotte rooster perched on antique wooden egg case by rose bush, Calamus, Iowa, USA.

Lynn M Stone / Blue lace wyandotte rooster perched on antique wooden egg case by rose bush, Calamus, Iowa, USA.

Lynn M Stone / Creme Brabanter rooster perched on stump by rose bush, Calamus, Iowa, USA.

Lynn M Stone / Creme Brabanter rooster perched on overturned peach basket by rose bush, Calamus, Iowa, USA.

Lynn M Stone / Dark Grey Dorking rooster, portrait, foraging in grass beneath rose bush, Calamus, Iowa, USA.