Loons typically lay 1 or 2 eggs per nest attempt. Eggs are laid 1–3 days apart and are incubated, on average, for 27 days. Male and female loons share incubation duties equally, though research suggests that females tend to incubate more than males at night and towards the end of the nesting period. Chicks hatch 12–24 hours apart. In the event of a nest failure loons may renest up to 3 times in the same year, though the willingness to renest may vary from pair to pair.