Red Shouldered Hawk: Taking advantage of the unexpected

I took a friend's advice and visited St. Mary's College of Maryland one morning in search of a great blue heron.  Blue herons are fairly common in St. Mary's County, but they are fairly skittish and fly away the instant I bring out my camera.  I didn't see any herons, but I have learned to look around to see if I see anything else interesting to photograph.  I photographed a few red winged black birds clinging to the tall grass and some tall fluffy grass fronds, but I wasn't particularly impressed with the angles and backgrounds.  The birds were too small even with my 300 mm lens.  As I was getting ready to leave, I noticed a large bird in the top of a nearby tree.  I slowly walked toward it, trying not to scare it away.  I didn't know what type of hawk it was until I got home.  Red shouldered hawks apparently like deciduous forests and mainly eat small mammals.  I identified it by its red underparts and brown body.
A little patience can lead to unexpected results!