Field Trip Report: North Pond After Work
COS president and field trip leader Edward Warden recaps an April jaunt around North Pond after work.
Read More
Field Trip Report: Garfield Park
Field Trip leader Christina Harber recaps the recent COS trip to the underbirded Garfield Park.
Read More
Help for Herons at Big Marsh
Learn about the efforts by UIUC researchers and local conservation groups to bring breeding herons back to Big Marsh.
Read More
LaBagh Woods/Lower North Branch Stewardship Update: Spring 2023
LaBagh/Lower North Branch project chair Katy Krigbaum gives an update on the restoration work completed this spring.
Read More
Field Trip Report: Humboldt Park
Writer David Hoyt summarizes the April COS field trip to Humboldt Park.
Read More
Field Trip Report: North Pond
Field trip leader Edward Warden summarizes COS’s inaugural After Work bird walk at North Pond in Lincoln Park.
Read More
Hark! A Poem About a Bird
In honor of National Poetry Month, COS offers this sampler of bird-themed poetry. Try your hand at matching the verse to the poem and poet.
Read More
Birding Through the Year: April 2023
David Hoyt explores the sound of birds at his patch with this April installment of Birding Through the Year.
Read More
Field Trip Report: Woodcock Walk Roundup
COS President, field trip leader, and all around Timberdoodle fan gives us a roundup of COS’s 2023 spring woodcock walks.
Read More
Field Trip Report: Richard Clark Park
Field trip leader Vinod Babu recounts a recent COS field trip to Richard Clark Park.
Read More
Women's History Month: Geneva Stratton-Porter
David Hoyt writes about Gene Stratton-Porter, a turn-of-the-century writer, photographer, and naturalist COS celebrates during this Women’s History Month
Read More
Dan's Feathursday Feature: Ross's Gull
Enjoy this latest installment of Dan Lory’s Feathursday feature, in which he describes his encounter with the Ross’s Gull that showed up in Chicago earlier this month.
Read More
Women's History Month: Marian Byrnes
Read about why COS celebrates Marian Byrnes, a Southeast Side conservation activist, during this Women’s History Month.
Read More
Women's History Month: Hazel Johnson
Read about why COS celebrates Hazel Johnson, the mother of the environmental justice movement, during this Women’s History Month.
Read More
Field Trip Report: Humboldt Park
David Hoyt reports on the recent COS field trip to Humboldt Park.
Read More
COS Breaking News!
Enjoy this recap of the latest COS news for March 2023.
Read More
Field Trip Report: Indian Ridge
Field Trip leader Jake Vinsel recaps the recent Indian Ridge Marsh COS bird walk.
Read More
COS 2023 Indiana Dunes Birding Festival Guide
Read COS’s guide to this year’s Indiana Dunes Birding Festival.
Read More
Field Trip Report: Basin Blitzes
Edward Warden recaps the COS Chicago River and Calumet River Basin Blitzes held this winter.
Read More
Birding Through the Year: January/February 2023
Contributor David Hoyt brings us the latest installment of his Birding Through the Year series, sharing his thoughts on winter birding.
Read More
