Asia’s hunger for sand takes a toll on endangered species

Noted: In grasslands near Poyang, the kind and amount of food the cranes consume “may no longer be enough to fuel egg laying” at the levels the birds managed in the past, says James Burnham, a conservation biologist at the University of Wisconsin in Madison. His group has documented a worrisome decline in the ratio of juvenile cranes to adults at Poyang between 2010 and 2012.