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Summary of results <br />Figure 5: <br />A total of 6 raccoons were radio - collared. <br />Five of these were females and all animals <br />were captured on Peltier Island. Locations of <br />all animals were monitored throughout 2005. <br />2004 Nesting Season <br />The Pig's Eye Lake colony, largest in the Minneapolis /St. Paul metropolitan area, <br />thrived throughout the 2004 nesting season. However, Peltier Island's population of about <br />150 nests rapidly declined between May 25, 2004 and June 15, 2004 when it ultimately <br />failed. Note: early signs of abandonment were documented at two separate times: <br />1. May 25, 2004: Aerial observers noticed many empty nests on the periphery of the <br />colony. <br />2. May 26, 2004: Attempted to install cameras in a second tree at Peltier Island. The <br />originally scouted tree, which had been determined to be active and appropriate for <br />camera installation, was empty. Further scouting showed that most trees in the <br />vicinity, while not completely abandoned, had fewer active nests than previously <br />seen. <br />Table 2 summarizes the difference in nest and chick survival between the Peltier Island and <br />Pig's Eye Lake colonies. <br />Colony <br /># Nests Monitored <br /># Chicks Monitored <br /># Chicks Surviving to <br />Fledge <br />Peltier Island <br />8 <br />13 <br />0 <br />Pig's Eye Lake <br />5 <br />8 <br />8 <br />Table 2: Comparison of Great Blue Heron chick survivorship between the Peltier Island and Pig's Eye Lake colonies. <br />6 <br />