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• <br />Video - surveillance 2004 — Pig's Eye Lake colony: <br />A total of five nests were monitored at Pig's Eye Lake in 2004. One nest never <br />produced young despite the best efforts of the adults and was abandoned by May 27, 2004. <br />However, four other nests, each containing two chicks managed to fledge all eight chicks. <br />Video data are still being quantified and analyzed. <br />Video - surveillance 2004 — Peltier Island colony: <br />A total of eight nests were monitored at Peltier Island. Of these nests, one had a <br />camera malfunction. A second nest failed to produce young despite parental effort. Of the <br />remaining six nests under video surveillance, all failed to produce young. Furthermore, all of <br />these remaining nests were raided by raccoons (Procyon lotor). <br />Video data suggested that adults, when present, were very reluctant to defend chicks <br />from raccoons. For example, an adult lingered nearby on screen while a raccoon fed on the <br />carcass of a chick for several minutes. Eventually, the adult heron attacked and drove away <br />the raccoon. Raccoon raids occurred at various times throughout the day and night. Nests <br />were raided multiple times, either the same day or on consecutive days. Verification that <br />multiple raccoons actively hunted within the colony occurred when two cameras <br />simultaneously recorded raccoon raids in the same tree (Figure 6). <br />