U.S. Supreme Court hands down ruling that limits EPA's authority to regulate commercial development of wetlands. Rio Rico residents and a consortium of environmentalists and wildlife conservation organizations challenge effort to bring commercial development to riparian corridors within the Rio Rico watershed. The proposal was withdrawn. Bird of the week: House Finch. Birding hotspot: Horseshoe reservoir on the Verde River north of Bartlett Lake. Friend of wildlife: Natural History Institute, Prescott. Calendar of bird friendly events coming up in weeks ahead in Arizona.