I am horribly logical in this case. I know it would be against almost the whole worlds opinion, but I think it's only fair.
Endangered species, who frankly isn't at fault and is caged vs 1 child in a billion who's in a place he shouldnt be (ok maybe not his fault).
Now who deserves to die based on that, neither of course, but why is the poor apes life worth less?
Given the limited number of them in existence in theory his life is worth more.
You can always have another child, right?