Charlie Summers / Adelie Penguin (Pygoscelis adeliae) carrying stolen rock from another nest in rookery, Peterman Island, Antarctica, November.

Andrew Parkinson / Arctic Tern (Sterna paradisaea) in flight chasing Arctic Skua (Stercorarius parasiticus) that has stolen its food. Scotland, UK, July. (non-ex)

David Tipling / Falkland / Brown skua (Stercorarius antarcticus) in flight carrying a stolen Gentoo penguin egg (Pygoscelis papua) Sea Lion Island, Falklands

Martin Dohrn / Hyaenas threatening lions who have stolen kill. Serengeti NP, Tanzania, East Africa. Image taken using 'Starlight Camera' technology and infra red light. Ngorongoro Conservation Area

Oscar Dewhurst / Bonnet macaque (Macaca radiata) feeding on ice-cream stolen from humans. Hampi, Karnataka, India. 2019.

Loic Poidevin / Hooded crown (Corvus cornix) flying with egg in beak, Danube Delta, Romania. May.

David Pattyn / Herring gull (Larus argentatus) with a stolen egg from a Gannet (Morrus bassanus) Great Saltee island, Saltees, County Wexford, Republic of Ireland June

Frederique Olivier / Adelie penguin (Pygoscelis adeliae) running with a stolen rock for its nest, Adelie Land, Antarctica, January.

Frederique Olivier / Adelie penguin (Pygoscelis adeliae) running with a stolen rock for its nest, Adelie Land, Antarctica, January.

Frederique Olivier / Adelie penguin (Pygoscelis adeliae) running with a stolen rock for its nest, Adelie Land, Antarctica, January.

Francois Savigny / Male tiger B2 with chital kill stolen from leopard. Bandhavgarh, India.

Manuel Schulz/ BIA / Glaucous Gull (Larus hyperboreus) flying with stolen egg prey, Iceland