Figure 2.

The tendency for individual female red deer to give birth to heavier offspring following warm springs declines with deteriorating environmental conditions. The plot shows mean regression slope estimates (±s.e.) of individual females' residual offspring birth weight–spring temperature relationship (in kg °C⁻¹) grouped by the densities that females experienced in their year of birth, with sample sizes for each density grouping indicated above the error bars. The regression line through these means is plotted (b=−0.0030 kg °C⁻¹ female⁻¹ ±0.0009 s.e.; p<0.01; r²=0.61).