A Wandering Tattler (Heteroscelus incanum), previously unrecorded from Arizona, was continuously present at the Phoenix 35th Avenue sewage treatment ponds from 18 September through 9 October 1971. First observed by Bonnie Burch, it was thereafter encountered daily. During this lengthy stay at these ponds, most of the active birdwatchers in the state had the opportunity and pleasure of observing this rarity. At all times the bird was noted to be healthy, alert, and vigorous in flight. It fed daily from the abundant animal and insect matter present along the rocky shoreline. On taking flight it frequently gave an emphatic ringing five note call, not unlike that of the yellowlegs (Totanus sp.). Color photographs taken by the author are on file in the Ornithology Departments of the University of Arizona and Prescott College.