Among the rocks of Purtaboi, in cool dark grottoes, the brown-winged tern rears her young. She often permits herself to be trapped rather than indicate her presence by voluntary flight. One of the most graceful of the sea-swallows this. Brown of back and greenish-white under surface; noisy, too, for it "yaps" as a terrier whensoever intruders approach the island during the brooding season; and its puff-ball chicken, crouching in dim recesses, takes the bluish-grey hue of the rock. The Blue Reef heron builds a rough nest of twigs on the ledges of the rocks, sometimes at the roots of the bronze orchid (DENDROBIUM UNDULATUM), and endeavours to scare away intruders by harsh squawks, stupidly betraying the presence of pale blue eggs or helpless brood. When the blue heron flies with his long neck stiffly tucked between his shoulders, he is anything but graceful; but under other circumstances he is not an ungainly bird. Occasionally my casual observations are made afar off, with the medium of a telescope. Then the birds are seen behaving naturally, and without fear or self-consciousness. The other day the cute attitudes of a beach curlew interested me, as he stood upon a stone just awash, and ever and anon picked up a crab. A blue heron flapped down beside him, and the curlew skipped off to another rock. In a minute the heron straightened his neck, poised its long beak for striking, and brought up a wriggling fish, which with a jerk of its head it turned end for end and swallowed. Another actor came within the field of the glass--the mate of the heron, alighting on the stone beside her lord and master. He was in a peckish humour, and instantly the tufts on his shoulders, the long feathers on the neck, and the rudimentary crest were angrily erected, and he made a peevish snap at her. You can imagine his reproof--"Get away from this. Don't crowd a fellow. Go to a rock of your own. This is my place. You spoil my sport!" Then, remembering that domestic tiffs were not edifying to strangers--and there was the sober brown curlew looking on--the bird let his angry feathers subside, and made way for his spouse on the best point of the rock. Each on one leg, they stood shoulder to shoulder, the very embodiment of connubial bliss. I noticed, too, that the mistress was allowed to fish to her heart's content, the master never raising a feather in remonstrance, though she gobbled up all that came along. Low-lying Mung-um-gnackum, the abode of the varied honey-eater, the tranquil dove, and the brooding-place of the night-jar (CAPRIMULGUS) and lovely Kumboola, lie to the south-west, a bare half-mile away.