Intraspecific cache pilferage in larder-hoarding red squirrels (Tamiasciurus hudsonicus) in Kluane, Yukon

In Kluane, Yukon, red squirrels exhibit significantly lower rates of intraspecific cache pilferage compared to other regions and scatter-hoarding species. Research found that only 14% of individuals engaged in pilfering, with stolen cones accounting for just 0.3% of total cached food. Experimental removal of territory owners revealed that younger squirrels with smaller caches were more likely to pilfer when given the opportunity. However, pilfering behavior negatively impacted overwinter survival, as pilfering squirrels were less likely to survive the winter. The study used a mark-recapture method to track marked cones and examine variation in pilfering behavior, providing insights into the role of pilferage in larder-hoarding strategies.

Donald, J. (2010). Intraspecific cache pilferage in larder-hoarding red squirrels (Tamiasciurus hudsonicus) in Kluane, Yukon [University of Alberta Library]. https://doi.org/10.7939/R38625