Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: by Cosmic ( Posted Mon Sep 01 , 2008 11:47 am)How high can a fox jump ? The remaining ducks have taken to perching themselves on the highest points of the yard . They feel claustrophobic being locked up and we ca n't make a fort knox style pen until we can find the materials for a large area .

Question: Why are the ducks so elevated in the air ?
They are avoiding foxes .
They are perching on high points in the yard.