During the first 4 months just after hatching, one particular analyze uncovered 3 young obtained an common of over an ounce (33.3 grams) for every day. From 29 days to fledging, the young acquired an common of just underneath half and ounce (12.7 grams) for every day, 1.6 per cent of entire body mass. These owls can keep on being non-territorial for several years and the proportion of this kind of non-breeding "floaters" can attain 40 p.