Summer is in full swing in Butler County, and the Nautical Nature is also under way on Lake Arthur, where the 45-passenger enclosed pontoon boat hauls passengers Wednesday through Sunday.

The tours, which range in price from $2.50 to $5.25 for ordinary cruises and $11 to $19.50 for catered outings, focus on natural history and birds in the park.

Proceeds benefit the Moraine Preservation Fund, a nonprofit, volunteer organization responsible for reintroducing ospreys in the area. The group also operates a barn own reintroduction program, with breeding birds located in a building near the launch site.

The Preservation Fund offers private charters as well as fishing pole rentals to children 16 and younger.

Regular cruises depart at 7 p.m. on Wednesdays; 2 p.m. on Thursdays; noon, 2 and 4 p.m. on Saturdays; and 2 and 4 p.m. on Sundays.

Bingo or entertainment is offered on the Wednesday outings.

Additional brunch and dinner cruises are also available on weekends, with reservations required.

The boat requires six passengers to go out.

Private charters are available.

For information on catered cruises and other special outings, call 724-368-9185.