Stork throws her baby stork out of the nest. It looks cruel but that's a survival instinct. She knows she had to do this to save the whole family so the weakest must go to make others stronger.

Numerous literature remind us the similar principal was adopted by humans in the old days. Weak babies rarely survived. They have methods to make them stronger like leaving them in cold conditions outside. And I wouldn't be surprised this is still happening on this crazy world.