Flamecrest
Regulus goodfellowi
The flamecrest is a small perching bird, resembling a warbler. Its length is only 9 cm (3.5 in) and weight about 7 g, making it the smallest of all Taiwan's endemic bird species, and the smallest and most colourful member of its family in the world. The top of its head is yellow and orange, with black crown stripes. White feathers encircling the black eye-patches give it the appearance of having two black eyes. The most distinguishing characteristic is the orange-yellow crest on top of the head, for which it is named. Voice: Flamecrests have fine, shrill and high-pitched calls, zi zi yi. Although noisy at close range, the voice is soft and does not carry far.
ID text from Wikipedia, CC BY-SA 4.0
Golden-crowned Kinglet
Regulus satrapa
Adults are olive-gray on the upperparts with white underparts, thin bills and short tails. They have white wing bars, a black stripe through the eyes and a yellow crown surrounded by black. The adult male has an orange patch in the middle of the yellow crown. The juvenile is similar to the adult, but with a browner back and without the yellow crown. This is one of the smallest passerines in North America. Its length, at 8 to 11 cm (3.1 to 4.3 in), is probably the shortest of any American passerine. Its weight, averaging 6.1 g (0.22 oz) for females and 6.3 g (0.
ID text from Wikipedia, CC BY-SA 4.0

Learn this pair in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Flamecrest and Golden-crowned Kinglet.