Should you help a baby bird? If you’ve found a fledgling on the floor or noticed ... To help you decide what to do, we’ve called in vet Dr. Rebecca MacMillan to share her expert advice. With 16 years ...

observed the birds’ behavior in 2014 in Amsterdam, where she lives. “The poor warbler almost disappears in the wide-opened mouth of its ‘adopted’ baby,” Slothouber says. And yet “the ...