Your owl portrait is lovely!
Have you checked on the art of Lisa Congdon? She has had for sale a print of an owl that looks like she has used your owl photo to copy. Has she bought that right from you or is she abusing your copyright?
I am not very good with links, I hope this works! faso.com/theartedge/66723/lisa… Look at the very end of the comments, and you will find a post referring to your photo and to her print. You, better than anyone, can see if she has used your photo. If that is the case, I do hope she payed you for using it !