You are just describing how an evolutionary response works, not being more accurate.

I would specifically argue that the word "response" is itself contextually inaccurate, in the sense that it triggers ambiguity as to whether the change in reproductive rates is _intentional_ or not. My headline removes that ambiguity.

A different attempt: "Tusked elephants breeding less than before due to poachers. Tusk-less ones unaffected" (85)