The sensibility of wildlife sometimes far exceeds that of us humans. We can fool ourselves by saying their actions are beyond our comprehension, but it's probably just a convenient excuse for our lack of selflessness and regard for the bigger picture. Each to fulfil a given responsibility bestowed on the basis of capability or (in the unfortunate case of the unavoidable sacrifices) lack thereof to minimize losses.
We call ourselves highly developed and advanced beings, yet we lack these sound reasoning abilities. That's why I support saving wildlife over humans if given a choice. Unless it can be clear that humans can be untainted in their decision matrix, they are just not worth the attention. Let's hope the younger generation are worth our attention.