Once a pair bonds (they mate for life), the female can lay a new clutch if conditions are right.
However, I have to dock a few points for predictability because pigeons simply do not respect the calendar. Unlike other birds that stick to a strict spring schedule, pigeons are known to lay eggs year-round, provided the conditions are right. I’ve seen them nesting in the dead of winter (December/January) and the height of summer (August). They are the "convenience store" of the bird world—always open. what month do pigeons lay eggs