They're all over the place here, and they are for larger birds (Hawks, Crows, Falcons, Eagles...) In a 5 mile lineset I drive most every day they went from triangular to horizontal with these bird things; back and forth a number of times... Where there's a three phase airswitch bar (if that is even the right name...) I can understand, but is there an advantage to two of these per pole vs. the triangular pattern?
