The flamecrest (Regulus goodfellowi), also known as Taiwan firecrest, is a species of bird in the kinglet family, Regulidae.

They have a high-pitched see-see-see call and the song consists of a series of high notes.

[11] It usually inhabits evergreen trees in coniferous forests over 2,000 m above sea level, though it is commonest above 2,500 m and ranges upward to 3,700 m. Mountains it inhabits include Alishan, Da Yu Ling, Hehuanshan, Yu Shan, and the higher areas of Anmashan.

They prefer conifers in which to forage, and are usually found in the forest canopy, but will sometimes venture into lower vegetation.

Its habitats had the coldest mean temperature and lowest warmth index of all 17 endemics, as well as the highest annual rainfall for the five uncommon species, though its distribution regarding vegetation and human disturbance was similar to those of the others.

These lively songbirds are mainly solitary but will move around actively in small, loose flocks of their own species as well as with coal tits and Eurasian nuthatches.

A study of the foraging ecology of alpine forest birds on conifers in the Taroko National Park found that, when compared with Eurasian nuthatches, coal tits, green-backed tits and black-throated tits, flamecrests were the most generalised foragers, utilising almost all of the crown of a tree, rather than specialising in parts of it as with the other species, with which it associates in mixed-species foraging flocks during the non-breeding season.