QUESTION: Does the phrase “porcupine density” usually pertain to the density of an individual porcupine, or to the density of numerous porcupines scattered across an expanse of land?
ANSWER: See the report:
“Estimating porcupine (Erethizon dorsatum Linnaeus, 1758) density using radiotelemetry and replicated mark-resight techniques.” O. Halem and T. K. Fuller, Zeitschrift fiir Saugetierkunde, 1999, pp. 6485-90.