Brown Thrasher vs Black Snake

Unfortunately, by the time we discovered the reason for the ruckus in the trees just off our front yard, this snake had already snatched one of the two brown thrasher chicks from the nest, which was in a bush just a couple of feet off the ground. The parents tried to run off the snake, but it climbed a tree, where it held them at bay for a little while, then apparently grew tired of the battle, climbed back down and slithered off into the woods.