Mama Bluebird....

.....keeping watch. (best viewed in Large)  It became evident that there were babies in the hollow of a dead tree as Mama and Papa kept a close eye on it and occasionally they brought back some goodies that they deposited in the hole.  Unfortunately, the hole was just too high up to get a glance of them. 

Just below them was a beautiful Green Heron fishing (see extra).  It was hard to know where to point my camera.