Table 1. Fixed and random effects in a minimum adequate generalized linear mixed model explaining variation in bird establishment success while controlling for geographical region and taxonomic levels
Effect Estimate SE Type III, FZP
Fixed
    Propagule size 0.973 0.134 52.83 <0.0001
    Habitat generalism 0.625 0.146 18.28 <0.0001
    Relative brain size 0.526 0.185 8.08 0.0047
Random
    Orders 0.266 0.289 0.92 0.1785
    Families within orders
    Species within families 0.846 0.286 2.96 0.0015
    Region 0.739 0.442 1.67 0.0472
  • The minimum adequate model was obtained by backward selection, removing nonsignificant fixed effects.