National Geographic : 1945 Sep
Keeping House in Borneo 317 Ewing (alloway A Slack-rope Climber Risks His Life That Chinese Epicures May Have Bird's-nest Soup Using a salivary secretion as cement, Collocalia, one of the smallest swifts, builds its egg platform against rocks. Almost pure gelatin, the best nests sold for $15 a pound. Whitish, edible nests were an 80,000-pound a-year export before war stopped Borneo-China commerce. Old nests were of no value; hunters destroyed them to ensure a fresh crop. This Bornean scales a liana near the sunlit mouth of a limestone cave. Into a basket go nests detached by his long spear. A candle for lighting the darker recesses is attached to the pole.