Monarch butterfly populations to get a boost from Biddeford The city has signed the Mayor's Monarch Pledge to create habitat for butterfly and educate residents about how they can make a difference. Share A triple crown of monarch butterflies look for nectar at Coastal Maine Botanical Gardens in 2018. Biddeford City Council has recently approved the “Mayor’s Monarch Pledge,” to support efforts to boost monarch populations in the face of declines. Tammy Wells Photo BIDDEFORD — Many a pretty picture has been made of delicate, colorful monarch butterflies fluttering from flower to flower, drinking nectar and pollinating plants as they go.