After completion of post-juvenile moult, readily sexed based on the colour of crown feathers. A few birds, probably females, are more intermediate, showing slight orange. Svensson (1992) gives some further clues concerning such birds.
Male, 2cy, April. Pattern of LC very variable, but the bird shown here shows a common pattern with LC largely coloured in vivid orange with small dark spotting. [1ET29443]
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