For three weeks, Bloomington friends have watched three juvenal Great Horned Owls. On Wednesday, Erika and I finally got a chance to take photographs. Great Horned Owl clutch size ranges from one to five. The first-layed egg is usually the largest. Hatching takes place at two-day intervals. The young owls grow quickly and leave their nest after about six weeks (Artuso et al. 2014).