Daddy has become Dad. Mama has become Mom. Michael articulates the single syllable distinctly and with a flavor of satisfaction. It feels right. He turned 4 1/2 a couple of weeks ago and I didn't even notice the half-year anniversary. He's getting older and more mature right on schedule. Somehow, I simultaneously enjoy hearing him call us by slightly more mature labels and feel a little twinge of sadness for the extra syllable I lost. I loved "Mama". At least I get to hold on to it a little while longer with Ava.