irregularly spotted; upper and under tail coverts, dull white, barred
with pale brown. Legs and toes, dull yellowish red.
After the second moult the spots and bars decrease in size, the
white advancing upon them; in the half-yearly change the upper part
of the back acquires a few of the grey feathers, and the under parts
and tail become white. The adult plumage is taken after the next
moult, namely, at three years old.
