A dense, more or less mottled, zone or cap at the large end, varying in different specimens from reddish pink to almost brick-red, and more or less of speckling, mottling, or Freckling of a somewhat lighter shade than the zone spreads in some thinly, in some densely over the rest of the egg.
"The Nests and Eggs of Indian Birds, Volume 1"
Allan O. Hume
The eggs are sometimes three, sometimes four in number, of a greenish stone-grey, freckled, chiefly at the larger end, with dusky and a few black hair-like streaks, which are not always present; they vary also in the amount of dusky Freckling at the larger end.
"The Nests and Eggs of Indian Birds, Volume 1"
Allan O. Hume
In some eggs the markings are almost entirely wanting, there being only a very faint brownish-pink Freckling at the large end; and in many eggs, even some that are profusely spotted all over, the markings consist only of darker or lighter brownish-pink shades.
"The Nests and Eggs of Indian Birds, Volume 1"
Allan O. Hume