 The Madeira firecrest is a small plump bird , of 9 – 10 cm ( 3 @.@ 5 – 3 @.@ 9 in ) length and weighing about 5 g ( 0 @.@ 18 oz ) . It has bright olive @-@ green upperparts with a bronze @-@ coloured patch on each shoulder , and whitish underparts washed with brownish grey on the breast and flanks . It has two white wingbars , a tiny black bill and brownish @-@ black legs . The head pattern is striking , with a black eye stripe , white supercilium and a crest which is yellow in the female and mainly orange in the male . Juveniles have a grey tinge to the duller upperparts , and lack the crown and eye stripes and supercilium ; by their first winter , only the flight and tail feathers remain <unk> , and the young birds are virtually indistinguishable from the adults in the field . This kinglet usually hops with its body held horizontally , and its flight is weak and whirring , with occasional jinking . 
