The difference between the prediction and the actual results is critical to the understanding of the limits and benefits of mathematical probability. Another example is the time of year for breeding, migration. Breeding plumage, territory defense, courtship displays are synchronized with seasons. Using wildlife habitat models vs point locations to determine where wildlife will live and breed. Using a survey from an outside source, have groups conduct the same survey.
Scale is an issue.
The percentage decreases considerably when only the habitats Great blue herons use are calculated. Gap Analysis wildlife predictions. Students sample Gap habitat polygons to assess the predictions. Quality of habitat vs habitat type. A forest may be a habitat but devoid of most wildlife if all the understory vegetation is taken away.