Marie Read / Wood Ducks (Aix sponsa), females behave aggressively toward a male (second from right) that is trying to join them on a floating log, autumn, New York, USA, October.

Markus Varesvuo / Black grouse (lyrurus tetrix) female and chick at nest, Vaala, Finland, June.

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

Markus Varesvuo / Two Black Grouse (Tetrao tetrix) hens in snowy tree, Kuusamo, Finland, January

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.