"Works produced by mechanical processes or random selection without any contribution by a human author are not registrable".
The problem with that argument is that the work was not created by mechanical process or random selection. The process was not primarily mechanical and the camera did not randomly appear in the jungle. It was transported there by a human. Its batteries were charged by a human. The memory card was downloaded by a human. The fact that an animal pressed the shutter is irrelevant. It's no different than when an animal triggers a motion sensor attached to a camera belonging to National Geographic, and they most certainly hold the copyright to those photos.
The problem with that argument is that the work was not created by mechanical process or random selection. The process was not primarily mechanical and the camera did not randomly appear in the jungle. It was transported there by a human. Its batteries were charged by a human. The memory card was downloaded by a human. The fact that an animal pressed the shutter is irrelevant. It's no different than when an animal triggers a motion sensor attached to a camera belonging to National Geographic, and they most certainly hold the copyright to those photos.