Do hope this owl is found quickly - although large, other birds do tend to attack, and obviously if its tame, it will not fend for itself.
I am fully aware of the size of these owls, having encountered one on our lane one winters afternoon. I have seen owls reguarly, but nothing prepared me for the sight of one of these giant ones walking towards me. At the time I thought it was going to attack me, but think it wanted me to pick it up ....errr....nooooo t was massive!!
Do not know if it was let loose or escaped, but I rang our local owl sanctuary. I think they thought I was talkng about a barn owl, because they told me to throw a coat or rug over it, and making sure I did not get bitten or scratched by its talons, put it in a cardboard box and take it to them. I think they did not believe me when I said I dd not have a coat or box big enough to put the thing in ....do not know what happened to the owl after that.