He looked around the barnyard.
It was cold. Hence the shiver.
Cold for a summer day.
It was a warm cold.
The kind of warm cold that makes you think you need a sweater.
So he went in a got one from the drawer.
After an hour of trying to put it on, he gave up.
Chickens have a hard time wearing sweaters because they don't have hands.
Luckily someone had left the drawer open.