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Kanab Ambersnail Recovery AGFD 7-FCCU-AZ010 $144,300 This project established one additional wild population of the endangered Kanab ambersnail Oxyloma haydeni kanabensis (KAS) at Upper Elves Chasm in Grand Canyon National Park in accordance with the species Recovery Plan and a biological opinion on Bureau of Reclamation beach building flow releases from Glen Canyon dam. Two years of monitoring have revealed a population slowly increasing in abundance with densities approaching those observed in the only known natural population in the Park at Vesey's Paradise. Successful reproduction and recruitment of young has been confirmed. ~ Two additional new populations were attempted, but are suspected failures after • two years of monitoring. Drought conditions at Keyhole Springs are believed responsible for failure to thrive of the introduced population. No clear cause of ~ failure is apparent at the third site (Lower Deer Creek). Both sites are also in ~ Grand Canyon National Park. i A second task of this project was to establish a refuge population of the KAS at ~ the Phoenix Zoo. An important component for the recovery of many endangered ~ species is the establishment of a protected, captive population should ~ catastrophic events extirpate wild populations. These populations also provide opportunities for research, and public education while contributing to species ~ conservation. ~ The Phoenix Zoo constructed and maintained two artificial habitats that • effectively mimic the natural environment for the KAS. Host plants transplanted from the wild were successfully established in the habitats. Enclosures were completely self-sufficient requiring only minimal maintenance such as changing ~ or adding water to the pump system. In 1999, 50 KAS were introduced into the • enclosures; in 2000, 50 more snails were added. ~ Southwestern Willow Flycatcher Survey ~ Private 7-FC-CU-EC-010 $109,250 ~ Field surveys conducted over three seasons (1997, 1998, 1999) along the San ~ Juan River from Navajo Dam to the Colorado-Utah border confirmed the first ~ nesting and reproduction of endangered willow flycatchers. Surveys were ~ conducted under Federal permits issued by USFWS and using prescribed • USFWS protocols. The purpose of the studies was to confirm the presence/absence of migrating and nesting birds, characterize suitable or ~ preferred habitats along the river and suggest, if possible, mitigation measures ~ associated with the construction and operation of Navajo Dam. Information may ~ also be useful in assisting the Bureau of Reclamation in studies of re-operation • of the dam flows to benefit endangered fish species. Data will serve as baseline ~: ~~ H