Just look at the amazing colors of this bird!
The male long-tailed silky-flycatcher is 24 cm long and has a pale grey forehead. The rest of the crested head, neck, throat and lower belly are yellow. The back, lower breast and upper belly are blue-grey, and the flight feathers and long pointed tail are black. The outer tail feathers are spotted with white.
The female is 21 cm long and generally duller than the male, with a darker grey forehead, olive body plumage and a shorter, duller black tail. Immatures are similar to the adults, but the central tail feathers are shorter and the white spotting on the outer tail is indistinct.
The call of the long-tailed silky-flycatcher is a repeated chee-chip.