Delivering a blend of local history, environmental issues, education, entertainment, and fresh air, Davenport's River Action will again present a series of outdoor presentations in the first month-plus of the annual Channel Cat Talks and Riverine Walks: weekly "Explore the River Series" programs that, from May 26 through June 27, will address such topics as raptors, barges, Modern Woodmen Park, and the historically wicked night spot that was Davenport's Bucktown.