• Big Marsh Park (map)
  • 11599 South Stony Island Avenue
  • Chicago, IL, 60633
  • United States

Meet in the Big Marsh paring lot off of Stony Island Ave.

Join COS on a journey through one of the largest and most high quality wetlands in Chicago.

Beginning birders are welcome and we will have extra binoculars available.

RSVP here.

Trip Leader: Carl Giometti
Contact chicagiometti@gmail.com with any questions.