I have come home to find a rather large robin dead on my patio and a lovely brown bird dead in my utility room. GirlCat is definitely the culprit. She has a bell on her collar but clearly the birds didn't hear to get away. I have seen in the pet shop charms to hang on collars and extra bells. I wouldn't bother with the charms but wonder if more bells would make enough noise to give the birds more warning. They aren't heavy but wanted to see what people think about extra bells.
I know it is nature but it is still not nice and DS2 is going to be very upset. She had already had a mouse this morning and left it in her bed for us
though that may be have been BoyCat.