Hungry as a whole brood, the outsize baby devours everything brought by its foster parents—in the photo above, the provider is a reed warbler, a common host. Franka Slothouber, a retired photo ...

“We all know here that the best possible parenting for any baby bird of prey is its own kind,” he said. “So when you have an eagle in nesting mode, that's a good time to try and see if they ...