Analysis of variance table (‘type 3’) for the minimal adequate model from a GLM for the population-level analysis of the proportion of females second brooding produced each year, all populations combined, for the period 1955–2004 and 1973–2004. (The analysis was corrected for overdispersion (φ=6.19, φ=5.85 for the period 1955–2004 and 1973–2004, respectively), and has a total of 129 (1955–2004) and 95 (1973–2004) population year combinations; see text for further details. Note that if the same model is fitted excluding temperature, significance of year increases (Χ2=23.355 and Χ2=48.425, for the 1955–2004 and 1973–2004 period, respectively).)