The book I'm read is called Dark Fire by Chris D'Lacey. In this part of the book, Zanna Martindale is attacked by a mob of half darklings (Darklings are kind of like evil gargoyles, and half darklings are darklings, but they are shaped like crows.). Zanna is surprised when all of a sudden they get scared and fly away. She then finds out that the journalist, Tam Farrell had scared them. Tam had been given the auma of a polar bear when he was held captive on Farlowe Island, and the birds had been there when he escaped. The last half darkling was stuck in Zanna's hair. With the auma, Tam squeezed it's neck, it turned into ice, and melted. If I were Zanna, I would be really scared. Zanna hates Tam, but I wondered how she could still hate him after he saved her life.