For the care and feeding ... 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 ...

They say birds of a ... she removes one of their eggs and lays her own egg in its place. "The young cuckoo hatches after only 12 days and quickly pushes the hosts' eggs or babies out of the ...

"In all my years of studying how bird feeding impacts wild birds, I didn’t give much thought to how it can also impact the ...