Model Intercept External activity Egg-laying Food stocks Brood cells AICc Δ AICc
1 0.00 0.84 (0.68 - 1.00) 84.99 0.00
2 0.00 0.62 (0.39 - 0.85) 121.17 36.18
3 0.00 0.58 (0.34 - 0.82) 124.95 39.95
4 (NULL) 0.00 143.15 58.15
5 0.00 0.17 (-0.11 - 0.46) 144.00 59.01