Agustin Esmoris / Gentoo Penguin (Pygoscelis papua) tending to egg on nest in colony, Falkland Islands

Agustin Esmoris / Gentoo Penguin (Pygoscelis papua) adjusting egg in nest, Falkland Islands

Philippe Clement / Northern gannets (Morus bassanus) preening and adjusting nests in breeding colony, Hermaness NNR, Unst, Shetland Islands, Scotland, UK, May.

Karine Aigner / Scientist Nathan Cooper adjusting nano-tag put on a Kirtland's warbler (Setophaga kirtlandii) Cat Island, Bahamas, April 2017.

Karine Aigner / Scientist Nathan Cooper adjusting nano-tag that is being put on a Kirtland's warbler (Setophaga kirtlandii) Cat Island, Bahamas, April 2017.

Tony Wu / Ama diver adjusting her mask and breathing hose before going into the ocean to work. Futo Harbour, Izu Peninsula, Shizuoka Prefecture, Japan. June 2010.

Frederique Olivier / Snow petrel (Pagodroma nivea) adjusting nest, turning around on chick, Adelie Land, Antarctica, January.

Frederique Olivier / Adelie penguins (Pygoscelis adeliae) adjusting nest and incubating an egg, Adelie Land, Antarctica, January.

Frederique Olivier / Snow petrel (Pagodrama nivea) preening, scratching and adjusting feathers, Antarctica.

Frederique Olivier / Adelie penguin (Pygoscelis adeliae) at nest, adjusting the position of an egg that is just beginning to hatch, Antarctica.

Konrad Wothe / Shot zooming out from a male Golden bowerbird (Prionodura newtoniana) adjusting lichen in the court area to reveal the whole bower, Atherton Tablelands, Queensland, Australia.

Nick Upton / Pair of Grey seals (Halichoerus grypus) adjusting their positions on a sandy beach as the tide rises, Norfolk, England, UK, January.