The Massachusetts Audubon Society is conducting a research and asking for the public's help to submit data if you see any fireflies. Some ways you can encourage them: do not use harmful pesticides on your lawn, turn your outdoor lights off, keep your grass long and the leaves on the ground for them, and plant native pine trees in a dark area for them to lay eggs. You can also stack some wood for them to lay eggs on rotted wood. They also love moisture, so if you wanna go the extra mile, you can install a water feature like a pond if you have the means to do so. It is very sad that there are not as many as there used to be, so please do not capture them.