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Figure 1


Fig. 1. (A) Top view of nest, showing the positions (0, 90, 180, 270°) at the bottom of the nest from which each measurement of slope angle ({theta}) was taken. (B) Side view of the nests showing the positions from which each measurement of slope {theta} is taken where {theta}0° is the nest facing directly down slope, {theta}180° is the nest facing directly up slope, {theta} 90° and {theta}270° are taken along the sides of the nest. Slope angle was measured from to the ground to the horizontal plane (dotted lines). (C) Front view schematic of same nest measurements.