Mareca americana. Drake. Obtained March 12, 1911. April 7, 1912. Same as a month ago. No change except wear. There seem to be three old rectrices in the right hand side of the tail. Had an opportunity to ascertain for a certainty to-day. May 5, 1916. No change except wear. Bill pale blue with black tip, black edges to nasal openings, and a narrow bit of black at the base of the maxilla on each side. Still calls as much as usual. Occasionally I have seen him lifting his head up and down and preening against the female preparatory to mounting her. She, however, did not encourage and did not lay her head on the water as usual when ducks copulate. I have never seen him mount her.