Figure 4.
Comparisons of the physical properties of the nest samples by locations: (a) moisture content, (b) organic content, (c) dry density, and (d) void ratio. Horizontal lines extending from the boxes through the whiskers indicate the minimum and maximum values. Horizontal edges of the boxes indicate the first quartile (Q1) and the third quartile (Q3). The horizontal line in the middle of the box indicates the median. The mean is shown as the diamond symbol.
