This maintains the heat transfer between steam and liquid to a maximum. Figure 3 shows a temperature profile when saturated steam is used. The difference with the previous diagram is that there is now a layer of condensate on the heating surface and steam temperature is constant.
As a general rule Owls are monogamous - pairs are comprised of one male and one female, neither one of which has any involvement with other nesting birds. With some Owl species the pair bonds last only for the duration of the breeding season, especially if the species involved is dispersive or migratory.
Does not build its own nest. Adult females lay an average of 2 eggs per clutch with a range of 1 to 4 eggs. The eggs are incubated for 30 days. The chicks start moving out of the nest at 5 weeks and learn to fly at 6 weeks of age. Spotted owl pairs do not typically nest every year, nor are nesting pairs successful every year.