King penguin's feet, St. Andrews Bay, South Georgia, South Atlantic

Blue-footed Booby bird on Galapagos Islands, Ecuador

Cormorant, Everglades, Florida, United States of America

Eider duck (Somateria mollissima), male. Male appearing to call someone. Actual behaviour is scratching and cleaning mouth with claw on webbed foot, while drifting with winter raft , Scotland, United Kingdom

The feet of a Whistling duck at Martin Mere bird reserve near Ormskirk, Lancashire, England, United Kingdom, Europe

Gentoo Penguin (Pygoscelis papua) close-up of feet in the Falkland Islands, south Atlantic Ocean.

Brown booby's feet (Sula leucogaster), St. Peter and St. Paul's rocks, Brazil, South America

Brown booby (Sula leucogaster), detail of feet, St. Peter and St. Paul's rocks, Brazil, South America

Gentoo Penguin (Pygoscelis papua) close-up of feet on ice in Antarctica.

Duck's feet