The wire is what it is. Oddly enough, the urban areas are exactly their habitats these days, at least in Hawaii. Hundreds of tourists and beach-goers, high-rise apartment buildings and bus stops around, and these guys don't seem to mind any of that. I've never seen this behavior in any other tern species.
Nikon D700, 300mm+TC1.4, f5.6, 1/1600, iso400.
Thank you,