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December  October 7 October 21
January November  7 November 21
December 7 December 21

The schedule of events is subject to changed based on the status of the coronavirus response, weather, staffing, and other situations that may arise. If Calvert Nature Society or Calvert County Natural Resources Division cancels a program, a full refund will be issued. 

COVID policies   Cancellation and Refund Policies

Special events

These programs offer families, adults, and older teens, and opportunity to explore and learn about the natural world. Those under 18 must be accompanied by an adult. Reservations are required in advance. 

First Day Hikes


  • No upcoming events

As the War of 1812 raged into the summer of 1814, British troops sailed up the Patuxent River in a bid to take Washington, D.C. They stopped to commandeer supplies at the port of Lower Marlboro in what is now Owings and offered freedom to local slaves in exchange for their service in the British war effort. Fourteen men and women won their freedom on an occasion that is now commemorated as Lower Marlboro Freedom Day.

This year’s celebration will be held Saturday, Oct. 8, 2022 11 a.m. to 4 p.m. with walking tours, speakers, entertainment, food and exhibits – and fishing on the pier of the Patuxent River – at the historic Lower Marlboro United Methodist Church and Lower Marlboro Hall in Owings and All Saints Episcopal Church in Sunderland.

Read More about Lower Marlboro...

Maple Sugar Tapping 

Join Calvert Nature Society today and most programs are free!

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