"There are many that way," Amir said, indicating the way of the crowd. "But it is strange. For an animal, its health is its life. The hawk does not dash herself against the cliff."

She turned her eyes down the length of fence. "Instead, perhaps they circle us... like wolves."

In other words, she didn't think the attacking creatures were blindly smashing themselves against the fence. They were after something, and when wild animals were after something, they were sly and clever, and a distraction or attack from multiple sides was not out of the question. She wanted to scout for other creatures and felt that the current main body of attackers was well-covered. Of course, whether Derek took that meaning from her words was in question.