During the first four weeks soon after hatching, one particular study located three younger received an regular of more than an ounce (33.3 grams) per working day. From 29 times to fledging, the young obtained an ordinary of just less than half and ounce (12.7 grams) for every day, 1.6 percent of physique mass. These owls can remain non-territorial for numerous years and the proportion of these non-breeding "floaters" can access forty p.