Answer:
They are animals whose deaths won't affect the future.
Step-by-step explanation:
Lesperance pinpoint the creatures they are hunting in order to preserve the natural order.
Lesperance used the information provided to follow animals that were ready to perish due to natural reasons.
Because the animal was going to perish in a matter of minutes, hunting it would have no effect on the time stream.
As a result, the natural order will be preserved.