Figure 55. — Harborage box 1, May 10, 1948. Pad nest is at right center. Note the pile of goldenrod stalks to the left. 
These were cut and dragged into the box by rats. This behavior was particularly characteristic of the rats which in- 
habited area I during the entire history of the colony. The wooden triggers to the traps were similarly taken into the 
harborage boxes. One such trigger shows in the photograph. No suitable explanation for this behavior was apparent. 
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