Justus von Liebig's Law of the Minimum is an agronomic theory that states yield is proportional to the amount of the most limiting nutrient - whichever nutrient it may be.
Trapping wild pigs can be a daunting task. Certain uses and types of traps may have caused them to become more aware of structures built for confinement.
Cattle will naturally seek windbreaks in the winter. In cold weather, cattle require additional energy to maintain body temperature, and wind chill further increases energy demands.