Hanne & Jens Eriksen / African skimmer (Rynchops flavirostris) in shallow water along the beach, Oman, February

Hanne & Jens Eriksen / African skimmers (Rynchops flavirostris) two in shallow water along the beach, Oman, February

Tony Heald / Black Skimmer (Rynchops flavirostris) juvenile, Pantanal, Brazil

Tony Heald / Black Skimmer (Rynchops flavirostris) flying over water with Yacare caiman (Caiman yacare) in background, Pantanal, Brazil

Tony Heald / Black Skimmer (Rynchops flavirostris) young chick on sand bank, Pantanal, Brazil

Lou Coetzer / African skimmer (Rynchops flavirostris) skimming, Chobe River, Botswana, November.

Lou Coetzer / African skimmer (Rynchops flavirostris) flying at African openbill (Anastomus lamelligerus) standing in shallow water, Chobe River, Botswana, August.

Lou Coetzer / African skimmer (Rynchops flavirostris) in flight low over water, Chobe River, Botswana, May.

Lou Coetzer / Three African elephants (Loxodonta africana) with African skimmer (Rynchops flavirostris) attacking, Chobe River, Botswana, August, Vulnerable species.

Lou Coetzer / African skimmer (Rynchops flavirostris) mobbing Yellow-billed Kite (Milvus aegyptius) Chobe River, Botswana.

Lou Coetzer / African skimmer (Rynchops flavirostris) mobbing Osprey (Pandion haliaetus) Chobe River, Botswana.

Lou Coetzer / African skimmer (Rynchops flavirostris) attacking Egyptian goose (Alopochen aegyptiaca) Skimmer Island, Chobe River, Botswana.