Fiscal year ending 2024. Filed on September 1, 2025.
332 S Michigan Ave Ste 121 C980
Chicago, Illinois 60604
Chicago Ornithological Society (EIN: 36-3984236) has filed an IRS Form 990 since fiscal year 2022. In its fiscal year 2024 IRS Form 990 filing, Chicago Ornithological Society, a 501(c)(3) charitable organization, reported compensation for 12 employees. Among the employees shown here, the average compensation is $0.
Revenue
Expenses
Employee compensation
1 Restoration and Conservation led over 10 ecological restoration work days at local Forest Preserves planting several hundred native shrubs and removing invasive species 2 Educational Programing led over 20 virtual programs and in-person engaged over 600 members and shared a free quarterly digital magazine with members 3 Guided community birdwalks and Field Trips led over 70 field trips with community members in the Chicago region
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