A branch by itself shouldn't cause a problem because it should be at ambient temperature. But if it is shading and the exposing a bright sunspot as it moves, that might cause a problem. I have found that when I can find a way to point my cameras in a generally Northerly direction, I can reduce false positives by 75% or more. East and West are the worst directions and South is a little better but not as good as north.
it was pointed straight north and it was 12' off the ground pointing across a small gully at a water tank that was 25 yards away.
Beware of any old man in a profession where one usually dies young.
