In the Amazon’s ‘sand forests,’ birds play by different evolutionary rules

White sand ecosystem patch at the Reserva de Desenvolvimento Sustentável (RDS) do Uatumã, Central Amazonia. Credit: João Capurucho Picture the Amazon. You’re thinking lush rainforests teeming with animals, right? It turns out, the Amazon Basin contains other less-famous ecosystems that have been under-studied by biologists for years, including patches of habitat growing on white sands. […]