Ægialites [sic] dealbatus
south coast of China, Taiwan, Hainan.
Closely related to C. marginatus, C. alexandrinus, C. nivosus, C. javanicus and C. ruficapillus, all of which have on occasion been considered conspecific. Until recently, before true characters elucidated#R#R, considered conspecific with C. alexandrinus (and also C. nivosus), but, notwithstanding lack of genetic distinctiveness#R, differs when breeding in its larger size, including thicker, blunter-tipped bill, published data#R indicating bill depth at “nail” = 3.8 ± 0.24 vs 3.6 ± 0.57, effect size 0.46 (1); white (not black) lores (2); more extensively white forehead, with black of crown usually reduced (2); brighter and paler upperparts (2); much-reduced black lateral breast patches (ns); rufous-brown of crown not extending onto nape sometimes to divide hindcollar (ns); more white in wingbar (ns); also ecologically, occupying generally sandier, less muddy substrates (1). It differs from C. nivosus by same characters except for lore colour, and shows far less black on ear-coverts (2). Monotypic.
Breeding range uncertain, possibly SE China S from Fujian; winters S to Vietnam, Gulf of Thailand, Malay Peninsula and Sumatra#R.
Food and feeding
Status and conservation
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