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.
Eggs are brooded by the female with hatching taking place approximately 4 weeks later. Young owls fledge four to five weeks after hatching. These owls have few predators, but young, unwary owls may be taken by cats. The most significant predator of barred owls is the great horned owl. The barred owl has been known to live up to 10 years in the wild and 23 years in captivity.