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AOS Donor Contribution Levels

Donors to the American Ornithological Society are recognized according to their lifetime contribution level. Additionally, donors of bequests and other planned gifts are recognized with membership in the AOS Legacy Circle.

Donor Level Donor Amount
Perpetual Guarantor $250,000
Guarantor $100,000
Benefactor $25,000
Patron $10,000
Gold Sponsor $5,000
Silver Sponsor $3,000
Sponsor $1,000
Gold Donor $500
Silver Donor $100
Donor up to $100

Welcome to the American Ornithological Society (AOS)
Advancing Scientific Knowledge and Conservation of Birds

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