Annabeth refused to answer as an insult to her intelligence. They are not to be confused with the Sphinx from The Kane Chronicles. Strix - Owl-like creatures that eat the flesh and blood of humans. They also curse the mortals who kill them. Anyone scratched by the talons of the Strix will be paralyzed. In The Burning Maze, Apollo's Lester Papadopoulous form was chased by a flock of Strix. After one Strix gets through the tomato bomb and scratches Lester on the cheek, Grover was able to reason with it as the Strix states that it was sent by Emperor Caligula to kill them. Under the advice of the Arrow of Dardona, Meg and Grover grew strawberries to distract the flock of Strix so that they can get away. Other Strix appeared on the Julia Drusilla Yachts where Caligula uses them as surveillance. Caligula replaced the Germani with Strix and Pandai because the Germani are responsible for his mortal death. Stymphalian Birds – A flock of Stymphalian birds attack Camp Half-Blood in The Sea of Monsters while the camp's defenses are weakened. Percy and Annabeth use Chiron's boombox and Dean Martin's "Volare" to scare them so that Apollo's cabin can shoot them down. A flock of Stymphalian Birds attack the Argo II in The House of Hades but are quickly dealt with by Festus. In The Blood of Olympus, Frank and Hazel are mentioned to have fought a flock of them on Pylos, but they are quickly dealt with by Piper shooting vegetables at them with her cornucopia. In The Tyrant's Tomb, Apollo recalls the story of Percy using music against the Stymphalian birds and uses the same tactic to scare away a flock of giant ravens. In The Demigod Files, Phobos summons them to fight Clarisse after he steals Ares' war chariot. Taurus Sylvestre - Also known as Forest Bulls, they are a race of cattle with red fur and blue eyes. The Taurus Sylvestre are the known enemies of the Troglodytes. If they fall into a pit, they will die from their anger leaving their hides behind. In The Tower of Nero, three Taurus Sylvestre were in the rail cars on the Dare family's property. They escaped and were chased into a construction site by Apollo, Meg, Nico, and Will. The three Taurus Sylvestre fall into a pit and die from their anger as the four look at