Are your pics just generally soft or out of focus?
There could be a multitude of reasons.
1. Based on your stats, you shot at a focal length of 131 and aperture wide open. Thus your Depth of Field is going to be pretty shallow. At a subject distance of 20ft, you basically have 1.5 ft of focus to work with.
Try stopping down a bit to about 6-8. I know its going to make the things dark but you are gaining DOF to play with.
2. Like stated before, the longer the focal length the more hand shake is noticeable. You either have to shoot with a higher shutter speed or tripod.
3. Maybe not this photo, but a lot of cheaper lenses become really soft when zoomed all the way in and aperture is open. Shooting wide open often renders soft photos no matter what the focal length is. If I'm wanting really sharp photos with my kit lens, I typically shoot 1 stop down from open.
Thanks SB! I think I briefly got stuck on "meter is in the middle, shot is ready.....ALWAYS". I know better. I know there is more to learn. Just a few brain farts here and there with that type of thinking. : )
Ok, so I have to admit, I took that shot through my bay window.

I have had some good results doing it, but not very often of course. That tree with the wooden bench is right outside our front door, so as soon as I see the squirrels, woodpecker or other birds, and I open that door, they take off. I tried going out the back door, but same thing, they hear me no matter what. Twerps.
I always forget that aperture wide open means little or no DOF. UGH! I need better lenses that is forsure!
I think you have some very good advice!