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.