Table 1.

The relative ability of each of six functional traits to explain observed responses of 1317 tropical and sub-tropical bird species to land-use intensity. Explanatory power was estimated as the sum of AIC weights [1] of all models containing a given trait, from a set of models fitting all possible combinations of traits. Response to land-use intensity was modelled as the probability of presence of species in each of three land-use intensity classes—undisturbed, light and intensive—and, given presence, the abundance ratio in light relative to undisturbed and, intensive relative to undisturbed land use. AIC weights were calculated following [1].

trait	sum of AIC weights
mass	0.336
generation length	0.689
range size	0.150
migratory status	≈1.000
trophic level	0.003
diet	0.997
forest specialization	≈1.000