Adult southern rockhopper penguin (Eudyptes chrysocome chrysocome) at breeding and molting colony, Falkland Islands, South America

Adult Magellanic penguins (Spheniscus magellanicus) at breeding and molting site on Carcass Island, Falkland Islands, South America

Molting gentoo penguin (Pygoscelis papua) feather detail in Antarctica

Head detail of molting gentoo penguin (Pygoscelis papua) in Antarctica

A lone molting adult chinstrap penguin (Pygoscelis antarctica) in tussock grass on Prion Island in the Bay of Isles near South Georgia Island, South Atlantic Ocean.

Gentoo penguin (Pygoscelis papua) molting in Antarctica

Gentoo penguin (Pygoscelis papua) molting in Antarctica

Gentoo penguin (Pygoscelis papua) molting in Antarctica

Gentoo penguin (Pygoscelis papua) molting in Antarctica

Adelie penguin (Pygoscelis adeliae) chick molting its downy feathers with adult plumage beneath on Devil Island near the Antarctic Peninsula.

Gentoo penguin (Pygoscelis papua) molting in Antarctica