COS Past Events

RSVP Required

Join COS in search of breeding grassland birds at Horizon Farm.

RSVP Required

Join COS in Humboldt Park for a celebration of World Goth Day, black birds and dark (but positive) vibes!

Join the stewards of Montrose Beach Dunes for a workday at one of the top bird watching spots in the country!

RSVP Required

End the daylight hours with a COS bird walk at Douglass Park. This 160-acre hotspot that packs diverse habitats including prairie, savanna, and wetland.

RSVP Required

Join COS for an afternoon bird walk at Spring Valley to enjoy migratory birds.

RSVP Required

Experience birding in May in the northwest suburbs. A diversity of birds can be found throughout the prairie, woodland, and wetland habitats.

RSVP Required

Start your weekend early with a "pre-work" walk where we will look for spring migrants like warblers, vireos, thrushes, and orioles. 

RSVP Required

Join COS for a late afternoon bird walk at Spring Lake Forest Preserve to enjoy migratory birds.

RSVP Required

Let us explore Daniel Wright Woods in Lake County. This is a big-tree preserve along the Des Plaines Reserve near Vernon Hills that features a very interesting mix of spring migrants

RSVP Required

Join us for a very special guest program with Martin Harper, CEO of BirdLife International as we talk about Chicago’s place in the global mosaic of bird conservation!

RSVP Required

Migration season is on us. Let us walk along the bottomland and upland sections of Linne Woods and look for all manner of woodland migrants- sparrows, vireos and warblers galore!

RSVP Required

Join us at Montrose for a morning of spring migration birding.

RSVP Required

Start your weekend early with a "pre-work" walk where we will look for spring migrants like warblers, vireos, thrushes, and orioles. 

RSVP Required

Let us explore Daniel Wright Woods in Lake County. This is a big-tree preserve along the Des Plaines Reserve near Vernon Hills that features a very interesting mix of spring migrants

RSVP Required

Join us as we explore Humboldt Park in search of spring birds in this incredible oasis in the surrounding urban environment.

Join a stewardship workday at one of the remnant habitats left in the city!

Join the stewards of Montrose Point Bird Sanctuary (Magic Hedge) for a workday at one of the top bird watching spots in the country!

RSVP Required

Migration season is on us. Let us walk along the bottomland and upland sections of Linne Woods and look for all manner of woodland migrants- sparrows, vireos and warblers galore!

RSVP Required

Join us at Montrose for a morning of spring migration birding.

RSVP Required

Join us for a program all about the mysterious nighthawk; what makes them tick, why are they disappearing, and what's being done to save them right here in Chicago.