We asked readers what's a clear sign of spring in Chicago? Here's what you told us, lightly edited for clarity:"Tulips come up on Michigan Avenue."— Tara Goodwin"Construction during peak travel times."— Brian Althimer"The return of the piping plovers to Montrose Beach Sanctuary signals abundant insects, warm sunshine for tiny feathered bodies and nature's symphony ready for another beautiful season."— Toni Scavo"Full tour boats."— Sue Wynn"Automobiles with tickets for not moving during assigned street cleaning."— Edward M. Bury"I don’t have to wear my skull cap for two weeks straight."— George Wilson"Potholes."— Christopher Vaughn"When the weather gets off the roller coaster and stays in the upper 60s for more than three days."— Scott Wisniewski"Allergies."— Glennie Griffin"When I see worm castings. It's when they surface for the first time after staying under during winter."— Michael Blane"Ivy turning green at Wrigley."— Rick Gross"When you hear those four words in the forecast: 'cooler near the lake.'"— DeeDee Kotowski-Keacher"Lots of robins singing their little hearts out."— Lidia Poulo"The city crews are out planting all the flower boxes."— LeAnn M. Schneider Hibler"Delusional Cubs fans replace delusional Bears fans."— Tim Zeilstra"The boats coming out of winter storage."— Kelly Carter ...read more read less