A celebration will be held Saturday, May 4, 2019 at the Lake Renwick Heron Rookery Nature Preserve on opening day of the bird viewing season. 2019 migratory bird day posters and youth bird journals will be available as well as educational activities led by Will County Forest Preserve Staff and Will County Chapter, Illinois Audubon Society volunteers. Scopes and binoculars will be available and interpreters will assist the public in viewing hundreds of cormorants, great blue herons, great egrets, and black-crowned night herons as they build nests, incubate eggs, and begin to raise their young.