
Extract the answer to the question from the following context.
Question: What did Aristotle write that Pliny also observed?
Context: Aristotle noted that cranes traveled from the steppes of Scythia to marshes at the headwaters of the Nile. Pliny the Elder, in his Historia Naturalis, repeats Aristotle's observations.

cranes traveled from the steppes of Scythia to marshes at the headwaters of the Nile
