Table 1 Cut-offs for diets used in this study. Percentages refer to values given in EltonTraits 1.0, with Diet-Tetr being the sum of Diet-Ect and Diet-End (i.e. ectothermic and endothermic tetrapods are combined). Semi-specialists refer to birds that are less strongly aligned with a given diet but greatly increase the taxonomic breadth of the sample for that diet
Diet | Standard Cut-Off | Semi-specialist Cut-Off |
|---|---|---|
Folivore | 80+% Diet-PlantO | 60+% Diet-PlantO |
Frugivore | 80+% Diet-Fruit | 60+% Diet-Fruit |
Generalist | 30% or less in any category | 40% or less in any category |
Granivore | 90+% Diet-Seed | 70+% Diet-Seed |
Invertivore | 90+% Diet-Inv | 60+% Diet-Inv |
Nectarivore | 80+% Diet-Nect | 60+% Diet-Nect |
Piscivore | 70+% Diet-Fish | 50+% Diet-Fish |
Scavenger | 100% Diet-Scav | 50+% Diet-Scav |
Tetrapod Hunter | 80+% Diet-Tetr | 60+% Diet-Tetr |