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Upcoming Events

 
Field Trips and Events
North Pond Wednesday Bird Walks
Apr 29
North Pond Casting Pier
North Pond Wednesday Bird Walks
North Pond Casting Pier

In cooperation with Third Coast Birding and Peggy Notebaert Nature Museum, COS is proud to continue our long tradition of Wednesday morning bird walks at North Pond!

North Pond Casting Pier
Montrose Point Bird Sanctuary
May 1
Montrose Point Bird Sanctuary
Montrose Point Bird Sanctuary
Montrose Point Bird Sanctuary

RSVP Required

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

Montrose Point Bird Sanctuary
Linne Woods Bird Walk
May 2
Linne Woods
Linne Woods Bird Walk
Linne Woods

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!

Linne Woods
LaBagh Woods Stewardship Workday
May 2
LaBagh Woods Grove #1
LaBagh Woods Stewardship Workday
LaBagh Woods Grove #1

Join us for a habitat restoration workday at COS’s flagship stewardship site LaBagh Woods, and help bring back critical bird habitat.

LaBagh Woods Grove #1
Humboldt Park Sunday Social Bird Walk
May 3
Humboldt Park
Humboldt Park Sunday Social Bird Walk
Humboldt Park

RSVP Required

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

Humboldt Park
North Pond Wednesday Bird Walks
May 6
North Pond Casting Pier
North Pond Wednesday Bird Walks
North Pond Casting Pier

In cooperation with Third Coast Birding and Peggy Notebaert Nature Museum, COS is proud to continue our long tradition of Wednesday morning bird walks at North Pond!

North Pond Casting Pier
Daniel Wright Woods (Lake Co.)
May 7
Captain Daniel Wright Woods Forrest Preserve
Daniel Wright Woods (Lake Co.)
Captain Daniel Wright Woods Forrest Preserve

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

Captain Daniel Wright Woods Forrest Preserve
Montrose Point Bird Sanctuary
May 8
Montrose Point Bird Sanctuary
Montrose Point Bird Sanctuary
Montrose Point Bird Sanctuary

RSVP Required

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

Montrose Point Bird Sanctuary
IL Spring Bird Count
May 9
IL Spring Bird Count

Join the annual Illinois Spring Bird Count and help support one of the longest running citizen science efforts in the state.

Linne Woods Bird Walk
May 10
Linne Woods
Linne Woods Bird Walk
Linne Woods

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!

Linne Woods
Birds & Bytes: Shining a Light on Nighthawk Conservation
May 12
Birds & Bytes: Shining a Light on Nighthawk Conservation

RSVP Required

Join us for a program about the mysterious nighthawk and the work being done in Canada to help conserve them.

North Pond Wednesday Bird Walks
May 13
North Pond Casting Pier
North Pond Wednesday Bird Walks
North Pond Casting Pier

In cooperation with Third Coast Birding and Peggy Notebaert Nature Museum, COS is proud to continue our long tradition of Wednesday morning bird walks at North Pond!

North Pond Casting Pier

The Chicago Birder Blog

 
Blog
Field trip recap: Marian R. Byrnes Natural Area
Field trip recap: Marian R. Byrnes Natural Area

COS member Kris Hansen recaps the rail-friendly Birds and Botany walk at Marian R. Byrnes Natural Area April 19.

Field Trip Recap: Woodcock Walk at Air Station Prairie
Field Trip Recap: Woodcock Walk at Air Station Prairie

COS member Lauren Kostas recaps the Woodcock Walk at KEnt Fuller Air Station Prairie on March 24, 2026.

Field trip recap: Bilingual Calumet Park Birdwalk / Paseo Bilingüe Parque de Calumet
Field trip recap: Bilingual Calumet Park Birdwalk / Paseo Bilingüe Parque de Calumet

COS trip leader Em de Blas recaps the bilingual bird walk at Calumet Park. Em de Blas, líder de excursiones de la COS, hace un resumen de la caminata bilingüe de observación de aves en Calumet Park.

Field Trip Recap: Wild Goose Chase at Humboldt Park
Field Trip Recap: Wild Goose Chase at Humboldt Park

COS member Kate Allgeier recaps the Sunday Social Bird Walk at Humboldt Park April 5 that culminated in a wild goose “chase.”

Field trip recap: Black Feather Walk
Field trip recap: Black Feather Walk

COS member Carrie Lakin recounts late-afternoon birding in search of Goth birds at Humboldt Park.

Field Trip Report: Baker's Lake
Field Trip Report: Baker's Lake

COS member Kris Hansen recaps the midday bird walk at Baker’s Lake in the northwest corner of Cook County.