Nice shots. On the first two birds, did that lighting just happen or did one do some Photoshopping?
That's just morning sunlight between the trees. That's why the birds look so bright. In fact, I had to reduce the amount of exposure on the birds using PhotoShop. But the other bird on the trail is in the shade.
Now, while daylight illuminates the subject, there is a great deal of sunlight in the background.