Roman Willi / Timelapse of water evaporating from forested valley, Chur, Graubunden, Switzerland, October 2018. The camera pans up.

Roman Willi / Great potter wasp (Delta unguiculatum) entering frame and adding material to nest entrance, Lucerne, Switzerland, June.

Joel Sartore / Photo Ark / Indochinese green magpie (Cissa hypoleuca) female looking around. The animal performs bubbling with throat. Los Angeles Zoo & Botanical Gardens. Captive.

Joel Sartore / Photo Ark / Indochinese green magpie (Cissa hypoleuca) female looking around, Los Angeles Zoo & Botanical Gardens. Captive.

Joel Sartore / Photo Ark / Indian golden oriole (Oriolus kundoo) looking and hopping around, Pinola Conservancy. Captive.

Joel Sartore / Photo Ark / Southern brook lamprey (Ichthyomyzon gagei) mid shot breathing, Goodwater, Alabama. Captive.

Joel Sartore / Photo Ark / Indian golden oriole (Oriolus kundoo) male looking around, Pinola Conservancy. Captive.

Joel Sartore / Photo Ark / Blue-winged warbler (Vermivora cyanoptera) profile, looking around. Captive.

Joel Sartore / Photo Ark / Gabon talapoin (Miopithecus ogouensis) portrait of monkey looking up, Wroclaw Zoo. Captive.

Joel Sartore / Photo Ark / Saffron toucanet (Baillonius bailloni) male close up of head, Dallas World Aquarium. Captive.

Joel Sartore / Photo Ark / Saffron toucanet (Baillonius bailloni) male profile, Dallas World Aquarium. Captive.

Joel Sartore / Photo Ark / Cuvier's toucan (Ramphastos cuvieri) portrait moving head side to side, Dallas World Aquarium. Captive.

Joel Sartore / Photo Ark / Spot-breasted oriole (Icterus pectoralis) female walking into frame, Justin Miller's private collection, Florida. Captive.

Joel Sartore / Photo Ark / Spot-breasted oriole (Icterus pectoralis) female mid-shot profile, then leaves frame, Justin Miller's private collection, Florida. Captive.

Joel Sartore / Photo Ark / Spot-breasted oriole (Icterus pectoralis) female profile, leaving frame, Justin Miller's private collection, Florida. Captive.

Joel Sartore / Photo Ark / Black-winged starling (Acridotheres melanopterus) close up of head, Jakarta Natural Resource Conservation Center. Critically Endangered. Captive.

Joel Sartore / Photo Ark / Western meadowlark (Sturnella neglecta) standing profile, Milford Nature Centre. Captive.

Joel Sartore / Photo Ark / Regent bowerbird (Sericulus chrysocephalus) male close up, Healesville Sanctuary. Captive.

Joel Sartore / Photo Ark / Green-thighed caique (Pionites leucogaster) close up of head looking around, Loro Parque Fundacion. Captive.

Joel Sartore / Photo Ark / Green-thighed caique (Pionites leucogaster) walking and looking around, Loro Parque Fundacion. Captive.

Joel Sartore / Photo Ark / Cape parrot (Poicephalus robustus) male looking at camera, Loro Parque Fundacion. Captive.

Joel Sartore / Photo Ark / Hong Kong whipping frog (Polypedates megacephalus) profile, ACCB Cambodia.

Joel Sartore / Photo Ark / Spix's horned treefrog (Hemiphractus scutatus) male profile, Balsa de los Sapos, Ecuador. Captive.

Joel Sartore / Photo Ark / Limon harlequin frog (Atelopus limosus) pair mating in amplexus, Centro Jambatu. Critically Endangered. Captive.