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.
Clutch sizes range. from 3 to 8 eggs, incubation lasts 25 to 30 days. The Short Eared Owl (Asio flammeus) often lays more than one clutch of eggs a year. (they nest on the ground and predation is high) clutch sizes average 5 to 7 eggs, with. large clutches laid during years of high food abundance.