To settle the dispute, they called a truce. They would spend the day looking for "The Sign." The first one to find irrefutable proof of the season’s identity won the right to control the apartment's thermostat for the month.

Birds begin nesting, and newborn animals are a common sight in the countryside.

So, to summarize:

They drifted toward the town center, seeking air conditioning. They walked past a storefront display. Clara stopped dead.