Goldentail Stock Video Footage


This medium-sized hummingbird measures 9 cm (3.5 in) and weighs 3.6 g (0.13 oz). On average, the male's wings measure 49.7 mm (1.96 in), its tail 26.7 mm (1.05 in), and its bill (i.e. culmen from base) 18.2 mm (0.72 in). The female's parts are a little bit smaller, as its wings measure 47.7 mm (1.88 in), its tail 25.9 mm (1.02 in), and its bill 19.4 mm (0.76 in). The crown and upperparts are green, shading to the metallic golden-green tail. The wings are dusky, while the sides and belly are green. The throat is metallic blue-violet. The bill is straight, coral red with a black tip, and broad at the base. The female is paler overall, with more black on the bill and more grey on the throat, but still bears bright golden-green uppertail coverts. Both males and females' irises and toes are dark brown. After hatch, the juvenile completes its preformative plumage between March and August, and finish developing its definitive prebasic plumage at the same period (i.e. March–August) of the following year. During its first year after hatch, the female juvenile's plumage changes. The blackish culmen fades away into a more dusky one with some red wash on 50% of the basal, the throat's initial greenish-blue spotting turn into more extensive dark-blue spotting, and the outer retrices display cinnamon tips that then vanish as the female's plumage alters. As a contrast, the male juvenile's culmen evol...

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