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 of the annual Channel Cat Talks and Riverine Walks: weekly programs that, from May 31 through July 2, will address such topics as commercial fishing, steamboating, the Quad Cities River Bandits, the Hauberg Estate, and the history of Arsenal Island.