Economist: DAYBREAK is a heavenly time to look on the Amazonian canopy. From a Brazilian research tower high above it, a fuzzy grey sylvan view emerges from the thinning gloom, vastly undulating, more granular than a cloud. It is mind-bendingly beautiful. Chirruping and squawking, a few early risers–collared puffbirds, chestnut-rumped woodcreepers and the tautologous curve-billed scythebill–open up for the planet’s biggest avian choir. In a slick of molten gold, dawn breaks and the trees …