The Worldwide Variation in Avian Clutch Size across Species and Space
Figure 3
Cross-Species and Cross-Assemblage Model Fits
Fit between the observed clutch size and that predicted by the combined intrinsic/extrinsic multi-predictor model (Both, Table 1) across 5,290 species (A and B) and 2,521 grid cell assemblages of 220 × 220-km size [(C and D) for geometric mean of assemblage clutch size]. Fits were evaluated for the cross-species model (A and C) and the nested phylogenetic model (B and D). Least squares fits are shown. For details, see text and Table 1. The spatial patterns of the assemblage predictions are illustrated in Figure 4.