Dorothy laid her fourth egg tonight just before 9:00pm.
Update, Monday March 21, 9:00am: This morning, Dorothy and E2 bowed over their four eggs.
Update: Monday March 21 at 4:00pm: It's warm today & the wind picked up just after 1:30pm so Dorothy came off the nest and she and E2 did some beautiful courtship flying. E2 was particularly spectacular, making close sweeps past the building, flipping upside down, kiting above the CL. Sometimes he would kite, then flip over like a leaf and dive incredibly fast down the wind, descending from 500 feet high to 200 feet in seconds. Wow!