While I saw many cool birds on this trip this was my target bird (the whole monotypic family thing combined with dipping on it last month in Arizona), while I was adjusting my focus with these crappy photos - card full! I couldn't believe it. It flew off before I could delete some photos and didn't come back. While these aren't the most compelling photos or specimen (its a juvy) I'm convinced this is indeed an olive warbler (dark auricles are distinctive and no streaks on the chest rules out townsend's) compare here: http://herpindiego.com/images/000-974/Olive%20Warbler%20-%20Catalina%20Mts%20Arizona%20-%2008-24-2009%20-%20003.JPG