Solomon Owl in "Hanging By The Heels"

It was several nights before Solomon Owl and Benjamin Bat chanced to meet again in the forest.
“Hullo!” said Solomon.
“Hullo!” said Benjamin Bat. “I'm glad to see you, because I want to thank you for letting me spend the day in your house, so I wouldn't have to stay out in the storm.”

“You must be a light sleeper,” Solomon observed. (He did not tell Benjamin that he was welcome!)
“What makes you think that?” Benjamin Bat inquired.