Toxicological trivia from November 05, 2009: The genus Phytolacca, which owns the "ombú" (Phytolacca dioica) and Pokeweed, corresponding to native perennial of North America, South America, East Asia and New Zealand. They contain Phytolaccatoxin and phytolaccigenin, poisonous to:
a) Birds;
b) Mammals;
c) Fish.

Answer b. See "ombú" in poisoning with plants. Read more in Wikipedia: "Pokeweed are poisonous to mammals. However, the berries are eaten by birds, which are not affected by the toxin because the small seeds with very hard outer shells remain intact in the digestive system and are eliminated whole". In Rosario is very common to see pigeons eating fruit fallen to the ground.
Pigeon in Rosario