Franco Banfi,Franco Banfi / Piraputanga (Brycon hilarii) in the main spring Aquario Natural that goes in the Rio Baia Bonita, Bonito, Mato Grosso do Sul, Brazil

David Perpinan / Peach-fronted parakeets (Aratinga aurea) at roosting site, Pantanal, Mato Grosso do Sul, Brazil.

David Perpinan / Peach-fronted parakeets (Aratinga aurea) at roost site, Pantanal, Mato Grosso do Sul, Brazil.

David Perpinan / Peach-fronted parakeets (Aratinga aurea) at roost site, Pantanal, Mato Grosso do Sul, Brazil.

David Perpinan / Roadside hawk (Buteo magnirostris) perched in a tree, Pantanal, Mato Grosso do Sul, Brazil.

Jen Guyton / White-backed vultures (Gyps africanus) and spotted hyenas (Crocuta crocuta) squabble over the drying and deflated skin of an elephant carcass (Loxodonta africana), Laikipia Plateau, Kenya. The hyenas...

Chris Mattison / Sexton beetle (Nicrophorus investigator) on a dead mouse. Drumnadrochit, Inverness, Scotland, UK, August. (The mites that can be seen are using the beetle to carry them to food; they do not parasitise...

Luciano Candisani / Magnificent Frigatebird (Fregata magnificens) flock in flight, Moleques do Sul Island, Santa Catarina, Brazil

Luiz Claudio Marigo / Large-tailed Antshrike (Mackenziaena leachii) perched on branch, Atlantic Rainforest, Serra do Mar mountains, Bananal, Sao Paulo State, Brazil.

Luiz Claudio Marigo / Large-tailed Antshrike (Mackenziaena leachii) perched on branch, Atlantic Rainforest, Serra do Mar mountains, Bananal, Sao Paulo State, Brazil.

Luciano Candisani / Sabalo (Prochilodus lineatus) in a spiraling school,Touro Morto River, Pantanal, Mato Grosso do Sul, Brazil

Franco Banfi / Spectacled caiman (Caiman crocodilus) and Broad-snouted Caiman (Caiman latirostris) Rio Bai­a Bonita, Bonito, Mato Grosso do Sul, Brazil