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

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

Ernie Janes / Close up of newly laid free range hens eggs of different colours from various breeds, March, 2012.

Ernie Janes / Flock of organic free-range Domestic chickens (Gallus gallus domesticus) UK

Ernie Janes / Flock of organic free-range Domestic chickens (Gallus gallus domesticus) in barn, UK

Klaus Echle / Altsteirer breed hen (Gallus gallus domesticus) with chicks. Black Forest, Germany, August.

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hen in winter, UK, March

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hen in blue shed, UK

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

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

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hens in garden undergrowth, UK, August

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hens in blue shed, UK

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hens in blue shed, UK

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hens, UK, August

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hens garden undergrowth, UK

Ernie Janes / Bantum Cock, free range, mixed breed, Norfolk, UK, May

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hens in garden undergrowth, UK

Ernie Janes / Bantum cock and hen, free range in garden, mixed breed, Norfolk, UK

Ernie Janes / Domestic chicken, Welsummer Bantum cock crowing in winter, UK, March

Ernie Janes / Domestic chicken, Welsummer Bantum cock and hens in garden undergrowth, UK, August

Ernie Janes / Farmyard chicken (Gallus gallus domesticus) free range, mixed breed, perched on post, Norfolk, UK

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

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

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

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

Ernie Janes / Bantum Cock, feather detail, free range, mixed breed, Norfolk, UK

LYNN M. STONE / Black Java rooster and hens (Gallus gallus domesticus) foraging. Black Java are a critically endangered legacy breed; llinois, USA

LYNN M. STONE / Black Java rooster / cockerel (Gallus gallus domesticus) standing by corn shock. Black Java are a critically endangered legacy breed Illinois, USA

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

Gary K. Smith / Rescued ex-battery hen (hybrid), re-homed on rural allotment, enjoying free-range retirement, Norfolk, Uk, February

Gary K. Smith / Rescued ex-battery domestic hens (hybrids), re-homed on rural allotment, enjoying free-range retirement, Norfolk, Uk, February

GEORGETTE DOUWMA / Cockerel (Gallus gallus domesticus) and hens, UK

GEORGETTE DOUWMA / Cockerel (Gallus gallus domesticus) in hen run, UK

GEORGETTE DOUWMA / Cockerel (Gallus gallus domesticus) in hen run, UK

GEORGETTE DOUWMA / Cockerel (Gallus gallus domesticus) walking out of hen house

Pete Cairns / Free range domestic hens {Gallus gallus domesticus), feeding in front of Grampian Mountains, Cairngorms National Park, Scotland, UK

Pete Cairns / Domestic chickens / hens {Gallus gallus domesticus), free range, feeding on "mash" - mixture of grain and oats, Scotland, UK

Pete Cairns / Domestic chicken / hen {Gallus gallus domesticus), Black Rock strain roaming free range on Scottish farm, Scotland, UK

Pete Cairns / Domestic chicken / hen {Gallus gallus domesticus), Black Rock strain roaming free range on Scottish farm, Scotland, UK

Pete Cairns / Domestic chicken / hen {Gallus gallus domesticus), Black Rock strain roaming free range on Scottish farm, Scotland, UK

Pete Cairns / Domestic chicken / hen {Gallus gallus domesticus), Black Rock strain roaming free range on Scottish farm, Scotland, UK

Pete Cairns / Domestic chicken / hen {Gallus gallus domesticus), Black Rock strain roaming free range on Scottish farm, Scotland, UK

Simon Colmer / Light Sussex free range Domestic chicken / hen {Gallus gallus domesticus} UK