White stork
This bird has 2 big secrets. First of all, storks don’t just eat fish and frogs, but their diet also includes other birds, their eggs, small rodents, and snakes (including venomous ones). Their huge and strong beaks help these birds catch prey.
Second, storks adopt other birds’ chicks and throw their own babies out of their nests. It’s thought that they get rid of their own chicks in 2 instances: if the chicks are weak or if the parents don’t have enough food. However, scientists have noticed situations where neither of these 2 factors was present — in these cases, it’s explained as strange behavior on the part of the birds.