Day 99: Another afternoon hike on the Leslie Spit (aka Tommy Thompson Park). Today I used a polarizing filter for the first time, and was quite pleased with the results. This spot is a protected bird nesting area, including about 12,500 Double-crested Cormorants, and their young. The population here has exploded by about 20 percent a year since 1990, and is causing deforestation of the little forest canopy that exists on this area of the spit. This has led to an ongoing discussion on whether to allow the birds to continue, and let the environment take its natural course in their presence, or control the population, and maintain a balance that allows both the birds and the forest to thrive. Large colonies of Ring-billed Gulls and Black-crowned Herons also nest here annually along with lesser numbers of several other species.