ʻApapane are small at 13 cm (5.1 in) when fully grown.
They are sexually dimorphic in size: male ʻapapane have a mass of 16 g (0.56 oz), while females average 14.4 g (0.51 oz).
Adult ʻapapane are overall bright crimson, with distinct white undertail-coverts and lower abdomen feathers.
They have black primaries and retricies.
Juvenile ʻapapane are yellow-brown and gray, with the same white plumage as adults, and molt into crimson plumage over the course of two years. '
Apapane are often seen in a tail-up posture, showing off their white feathers.
ʻApapane are small at 13 cm (5.1 in) when fully grown. They are sexually dimorphic in size: male ʻapapane have a mass of 16 g (0.56 oz), while females average 14.4 g (0.51 oz). Adult ʻapapane are overall bright crimson, with distinct white undertail-coverts and lower abdomen feathers. They have black primaries and retricies. Juvenile ʻapapane are yellow-brown and gray, with the same white plumage as adults, and molt into crimson plumage over the course of two years. 'Apapane are often seen in a tail-up posture, showing off their white feathers.
ʻApapane