Number of a total of 102 plant species exploited by each of 17 species of parrots in lowland humid forest of Perú, specifying the plant parts used as food.

1Number of observations equals the number of unique observations of individuals of a given species of parrot feeding on some part of a given species of tree, for a total of 224 unique observations of 17 species of parrots collectively exploiting 102 species of trees. Only the first unique combination of parrot and tree species was used to ensure independence of observations (see Methods). Thus the number of observations for a given parrot species is equal to the number of tree species exploited by each species of parrot.