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COS Blog

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Field Trip Report: Horner Park
Field Trip Report: Horner Park

Writer Brighten Jelke recaps the September 15 COS Bird Walk at Horner Park.

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Robyn DetterlineSeptember 17, 2023field trip reports, Horner Park, Brighten Jelke
Field Trip Report: Palmisano After Work
Field Trip Report: Palmisano After Work

COS president and field trip leader Edward Warden recaps the September 6 COS After Work Bird Walk at Palmisano Park.

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Field TripRobyn DetterlineSeptember 10, 2023Palmisano Park
Field Trip Report: Humboldt Park
Field Trip Report: Humboldt Park

Field trip leader David Rupp recaps the August 31 COS bird walk at Humboldt Park.

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Field TripRobyn DetterlineSeptember 10, 2023Humboldt Park
Field Trip Report: Horner Park Nighthawk Watch
Field Trip Report: Horner Park Nighthawk Watch

COS president and field trip leader Edward Warden recaps the August 27 COS Nighthawk Watch at Horner Park.

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Field TripRobyn DetterlineSeptember 10, 2023Horner Park, nighthawks
Dan's Feathursday Feature: Northern Rough-winged Swallow
Dan's Feathursday Feature: Northern Rough-winged Swallow

In his latest Feathursday Feature, Dan Lory describes his journey learning how to photograph the Northern Rough-winged Swallow.

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Robyn DetterlineSeptember 7, 2023Feathursday, Northern Rough-winged Swallow
2023 COS Fundraiser Recap
2023 COS Fundraiser Recap

Katie Larson summarizes the 2023 Chicago Ornithological Society Fundraiser event held in August at Metropolitan Brewing.

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Robyn DetterlineSeptember 7, 2023
Field Trip Report: Salt Creek Marsh and Wood Dale Reservoir
Field Trip Report: Salt Creek Marsh and Wood Dale Reservoir

COS board member and field trip co-leader Christina Harber recaps the August 27 COS bird walk at Salt Creek Marsh and Wood Dale Reservoir.

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Field TripRobyn DetterlineSeptember 4, 2023Salt Creek Marsh, Wood Dale Reservoir
Birding Through The Year: Summer 2023
Birding Through The Year: Summer 2023

In his latest installment of Birding Through the Year, David Hoyt dissects the connotations of an “incidental” bird.

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Robyn DetterlineSeptember 3, 2023
The Woodcock Has Landed: A Conversation with Alex Tomlinson
The Woodcock Has Landed: A Conversation with Alex Tomlinson

Morgan Harpster shares the details behind COS’s new logo, designed by artist Alex Tomlinson.

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Robyn DetterlineAugust 28, 2023
The Woodcock Takes Flight: A Conversation with Walter Marcisz
The Woodcock Takes Flight: A Conversation with Walter Marcisz

Lauren Kostas interviews former COS president Walter Marcisz to reflect on the current COS logo, which he designed over thirty years ago, as well as the changes in COS and Chicago birding over the years.

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Robyn DetterlineAugust 18, 2023
Results of the 2023 Nighthawk Monitoring Season
Results of the 2023 Nighthawk Monitoring Season

With the 2023 nighthawk monitoring season behind us, we are excited to now share some of the key results from the efforts of our amazing volunteers. Spoiler alert, they did in fact find nighthawks!

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ConservationEdward WardenAugust 14, 2023nighthawks
Chasing the Timberdoodle
Chasing the Timberdoodle

Where did the original COS American Woodcock logo come from? Read our theories as we unravel the mystery of our beloved timberdoodle.

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Robyn DetterlineAugust 11, 2023
Field Trip Report: Orland Grassland
Field Trip Report: Orland Grassland

COS board member and field trip co-leader Jake Vinsel recaps the July 16 bird walk at Orland Grassland.

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Field TripRobyn DetterlineJuly 31, 2023Orland Grassland
Backpacks for Conservation: an update on Chicago's Black-crowned Night-herons
Backpacks for Conservation: an update on Chicago's Black-crowned Night-herons

Earlier this year, a team of researchers and volunteers came together to identify and develop techniques to encourage Black-crowned Night-herons to explore additional rookery locations. Today, we’re excited to share an update on this project and some of the results of those efforts!

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ConservationEdward WardenJuly 18, 2023
COS MAPS Bird Banding Station Enters Year 4
COS MAPS Bird Banding Station Enters Year 4

COS Vice President and Calumet Project committee chair Stephanie Beilke provides information about the fourth year of bird banding at Big Marsh.

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ConservationRobyn DetterlineJuly 16, 2023MAPS, Big Marsh, Genoscape Project
Redfin Promotion of Bird-Friendly Gardening
Redfin Promotion of Bird-Friendly Gardening

COS was among several birding organizations contacted by Redfin Corporation for tips to create a bird haven in our yards and gardens. Check our their post to see what best practices were shared.

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ConservationLindsay WilkesJuly 12, 2023
COS Breaking News!
COS Breaking News!

Enjoy this recap of the latest COS news for July 2023.

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Robyn DetterlineJuly 9, 2023
Field Trip Report: Humboldt Park
Field Trip Report: Humboldt Park

COS board member and field trip co-leader Robyn Detterline recaps the June 17 COS/Feminist Bird Club Chicago inclusive walk at Humboldt Park.

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Field TripRobyn DetterlineJuly 2, 2023humboldt park
Why Common Nighthawks Like Ball Games (and Other Intriguing Facts About These Fascinating Birds)
Why Common Nighthawks Like Ball Games (and Other Intriguing Facts About These Fascinating Birds)

Guest blogger Maggie Van Dyke provides interesting facts about the Common Nighthawk.

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ConservationRobyn DetterlineJune 27, 2023nighthawks
Field Trip Report: Iroquois County SWA Whip-poor-will Walk
Field Trip Report: Iroquois County SWA Whip-poor-will Walk

COS president and field trip leader Edward Warden recaps the June 10 COS Whip-poor-will walk at Iroquois County State Wildlife Area.

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Field TripRobyn DetterlineJune 26, 2023Iroquois County SWA, Birds & Botany
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