Red-knobbed Coot  Fulica cristata

Al Warsan Lakes, 06.12.2007 - featherbase looks good for a non-hybrid.

Al Warsan Lakes 13.05.2005, on nest.

Feathering at billbase might be good for non-hybrid birds, see http://www.hows.org.uk/inter/birds/mallorca/image45.jpg

Al Warsan Lakes (when it was called Wimpey Pits) 14.06.2002.