Our path first led through the forest near the banks of the river, of which we occasionally got glimpses. It was here of considerable width, bordered by mangrove bushes. In one or two places there were wide flats covered with reeds. Suddenly, as we passed a point of the river, I saw drawn up what had much the appearance, at the first glance, of a regiment of soldiers, with red coats and white trousers.

“Why, where can those men have come from?” I cried out.

David, who was near me, burst into a laugh, in which his sisters and the boys joined. “Why, Andrew, those are birds,” he answered. “A regiment, true enough, but of flamingoes; and see! they are in line, and will quickly march away as we approach.”

A second glance showed me that he was right; and a very curious appearance they had.

“See! there is the sentinel.”

As he spoke, one of the birds nearest to us issued a sound like that of a trumpet, which was taken up by the remainder; and the whole troop, expanding their flaming wings, rose with loud clamours into the air, flying up the stream. We went on, and cutting off a bend in the river, again met it; and here our bearers declared that they must stop and rest. We accordingly encamped, though Senhor Silva warned us that we must remain but a short time, as we wished to reach some higher ground before dark. A fire was lighted for cooking; and while our meal was preparing, David and I, with the two boys, went down nearer the banks to see what was to be seen. We observed on the marshy ground a little way off a high mound, and creeping along, that we might not disturb the numerous birds which covered the banks or sat on the trees around, we caught sight of another mound, with a flamingo seated on the top of it, her long legs, instead of being tucked up as those of most birds would have been, literally astraddle on it.

“That is one of their nests,” whispered David. “The bird is a hen sitting on her eggs. Depend upon it, the troop is not far off. See, see! there are many others along the banks. What a funny appearance they have.”

Presently a flash of red appeared in the blue sky, and looking up, we saw what might be described as a great fiery triangle in the air sweeping down towards us. On it came, greatly diminishing its rate, and we then saw that it was composed of flamingoes. They hovered for a moment, then flew round and round, following one another, and gradually approached the marsh, on which they alighted. Immediately they arranged themselves as we had before seen them, in long lines, when several marched off on either side to act as sentinels, while the rest commenced fishing. We could see them arching their necks and digging their long bills into the ground, while they stirred up the mud with their webbed feet, in order to procure, as David told us, the water-insects on which they subsist. They, however, were not the only visitors to the river. The tide was low, and on every mud-bank or exposed spot countless numbers of birds were collected—numerous kinds of gulls, herons, and long-legged cranes—besides which, on the trees were perched thousands of white birds, looking at a distance like shining white flowers. They were the egretta flavirostris. Vast flocks of huge pelicans were swimming along the stream, dipping their enormous bills into the water, and each time bringing up a fish. They have enormous pouches, capable of containing many pounds of their finny prey.

“Could we kill one or two we should get a good supply of fish for supper,” said David; “for the pelican stows them away in his pouch, where they remain not only undigested, but perfectly fresh, and not till it is full does he commence his meal. However, as we have no canoe, even were we to kill one we could not get him.”

While we were looking on, a huge bird, descending from the sky, it seemed, pounced down into the water, quickly rising again with a large fish in his mouth.