Scientists are not magical logic faeries separated from the seething mass of culture by a wall of pure mathematics. Science is intertwined in life.

Once you have found that a species is being wiped out, you could stand on the sidelines and measure its decline, watching dispassionately, knowing that you can reach a good solid conclusion about what was killing them when the last dissection is fully documented, or you could chose to interfere and try and prevent the extinction.

However, if what is killing them is well funded human activity, you do not have a hope in hell of interfering successfully without getting political.