Our last day in southern Arizona before we head east through the Texas highlands, Houston and home. We spent the day around Green Valley starting early in Montosa Canyon, following up on a recent sighting of Five-stripped Sparrow – another of those species which just has a toehold in south-east Arizona. We arrived at ‘Km 1’ and set ourselves up, slowly scanning the surrounding rocky hillsides. A distant Rock Wren, calling from a pinnacle high up on the slopes, and a few bush birds in the closer scrub. Then a stocky bird flew into a dead bush on the opposite side of the track – a dark sparrow with an interesting head pattern. It dropped to the ground just a few feet in front of us before flying deeper into cover. Alas too close and quick for a photo. Our target bird preventing a dot day. After a late breakfast we set off to explore Box Canyon – a new location for us. Again, another nice selection of bush birds including the target of Black-tailed Gnatcatcher and, around the dam another, more obliging Thick-billed Kingbird. We headed for lunch and an afternoon siesta but not before dropping in on the local water treatment plant. Here the settling ponds produced another couple of trip ticks – Green-winged Teal and American Wigeon, in amongst the Coot and Ruddy Duck. A late afternoon session in Madera Canyon allowed us to finally get Broad-tailed Hummingbird – a grip-back from Neil – who’d seen one earlier. The evening nightbird stake-outs produced much the same as the previous night but we did manage to see Whiskered Screech Owl in the hole and hear Mexican Whip-poor-will. We now need just a handful of species to meet our trip target of 350 – it could be touch and go.