For the most part, the female has been on watch near the nest as the chicks grow.  The male is always nearby but at times almost out of sight.  The pair sensed that some activity was going on near the nest and they perched together to better observe what was going on.  A treat to see both together on the twisted piece of rebar sticking out front he bridge on west side.  Note the smaller banded male and the larger unbanded female.