Sorry to hear about your loss garden lady.... I did post some picture and how to keep them away on the wong thread.
So here I go again.....
How To Keep Bad Birds Out of Your Pond... first you will need lots of garden twine, string twine high above the pond from tree to tree or to the house. Cut thin long strips of old cloth and tie on to garden twine every two feet or so, this will dangle and blow in the wind. The blowing strips of cloth will scare the birds away. Criss cross the twine several times to create a web of twine, blocking the large preditor birds from landing or taking off. The twine can be hung by ladder high above your head so it will not take away from the beauty of your lovely pond. I did this two years ago when a big blue heron came and ate half my goldfish from the bottom pond. Bad heron has not come back since. This method is very effective and cheap, I got the idea from the Japanize who do this in Japan to keep the birds away.