The New England Wildlife Center released its last blizzard-battered animal back into the wild last week, according to Greg Mertz, the Weymouth-based organization’s chief executive officer. He said the red merganser was one of four of the stranded sea ducks brought to the center. “In this particular storm, we also had a sawhet owl come in, a mute swan, a red loon, and a couple of gulls,” he said. He said fewer animals were brought to the center than after more-typical storms. “The way animals come to us is people find them in jeopardy and bring them to us. The snows were so deep and the shores so ragged [after the blizzard] that people couldn’t get out there,” he said.