凫 鳧 fu2
mallard; Anas platyrhyncha

strokes 13
radical
鸟
鳥
strokes after radical 2
凫茈 鳧茈 fu2 ci2
see 荸薺|荸荠

凫翁 鳧翁 fu2 weng1
watercock (Gallicrex cinerea)

棉凫 棉鳧 mian2 fu2
(bird species of China) cotton pygmy goose (Nettapus coromandelianus)