At the local park there is a Great Blue Heron that won't let me get within 30-50 feet with my camera. But this same Heron will stand still when someone walks by without pausing. I've even seen it let a person with a large dog walk right by within 10 feet or so. If it sees you looking at it, it prbably thinks you're looking for lunch! :O With a camera it probably only sees a huge eye staring at it.
I wonder if you could make afilter with a hologram ofa fish or something. But, with my luck it would work, and the heron would attack my lens! :lol: