The most abundant bird is the wader ruff (Philomachus pugnax), with more than one million seen on the lake at one time.    From Wordnik.com.  [Lake Chad flooded savanna] Reference

In the Hadejia-Nguru wetlands the most common waterbirds are white-faced whistling duck (Dendrocygna viduata), garganey (Anas querquedula), northern pintail (Anas acuta), and ruff (Philomachus pugnax).    From Wordnik.com.  [Lake Chad flooded savanna] Reference

Significant populations of Palaearctic birds winter here, with several thousand wigeon (Anas penelope) and shovelers (Anas clypeata) observed in the Bale Mountains, along with waders such as ruffs (Philomachus pugnax) and greenshanks (Tringa nebularia).    From Wordnik.com.  [Ethiopian montane moorlands] Reference

Recent concerns include the availability of nesting sites for the endangered West African subspecies of black-crowned crane (Balearica pavonina pavonina) and adequate wintering grounds for intercontinental migrants such as the ruff (Philomachus pugnax).    From Wordnik.com.  [Lake Chad flooded savanna] Reference

This shameful trade affects highly endangered birds such as the Ruff (Philomachus pugnax).    From Wordnik.com.  [timesofmalta.com] Reference

Approximately 500,000 garganey (Anas querquedula) and up to 200,000 pintail (Anas acuta) winter here, along with large numbers of ferruginous duck (Aythya nyroca), white-winged tern (Chlidonias leucopterus), ruff (Philomachus pugnax), black-tailed godwit (Limosa limosa) and other waterbirds.    From Wordnik.com.  [Inner Niger Delta flooded savanna] Reference

Between 450-550,000 Anatidae, 250,000 Limicolae, 20,000 greater flamingos Phoenicopterus ruber, 3,000-12,000 lesser flamingos P. minor and 2,500 European spoonbills Platalea leucorodia, owe their winter survival to the quality of the environment of the Senegal river delta. 300 species have been recorded including garganey Anas querquedula, shoveler A. clypeata, pintail A. acuta, ruff Philomachus pugnax, and black-tailed godwit Limosa limosa.    From Wordnik.com.  [Djoudj National Bird Sanctuary, Senegal] Reference