Last year was an incredible year for early bluebirds. Typically they do not start nesting until April, sometimes late April. Will we see eggs again in March like some landlords did? I recommend each year to have your boxes up and cleaned by late February no matter the weather. Bluebirds will start their pair bonding then and start checking out potential nesting sights. We often see them taking a few sprigs of grass into the box that gets us really excited but it is much too early for them to be laying eggs now. Be patient and remember they generally nest 3 times per season.