Plate 23.
From a drawing by H. Grönvold.
THE DISPLAY OF THE GRASSHOPPER WARBLER.
The behaviour of this bird under the stimulus of sexual excitement is precisely similar to that of the Sun-bittern and the Kagu, yet it has no brilliant colours to exhibit by such actions.
Face page 142.
Plate 24.
THE DISPLAY OF THE SUN-BITTERN.
Quite inconspicuous in repose, this bird, in its moments of exaltation, becomes banded and blotched with vivid colours, revealed by spreading the wings and tail.