The IOU offers different membership options
You can join the IOU for an annual membership fee and benefit from all our membership services. You may also wish to support our mission and programs through donations.
The IOU has categorized their membership applications levels in accordance with the World Bank economic income categorization. This is to address the financial inequalities and ensure that as many interested ornithologist from around the world are able to join and benefit from the IOU membership engagement. Hewewith we link to the World Bank Country and Lending Group.
IOU Membership Levels
|IOU Membership levels||Annual Fee|
|IOU Supporting Member
For members wanting to support the IOU to ensure that the dues for students and members from low- and middle-income countries can be kept low.
|IOU Member (High-income countries)||USD 80|
|IOU Member (Middle-income countries)||USD 40|
|IOU Member (Low-income countries)||USD 20|
|IOU Early Professional Member (High-income Countries)
Only for members within 5 years of their terminal degree
|IOU Student Member levels||Annual Fee|
|IOU Student Member (High-income countries)||USD 40|
|IOU Student Member (Middle and low-income countries)||USD 15|
|IOU Organisational Member levels||Annual Fee|
|IOU Organisational Member-Large Institutions
|IOU Organisational Member-Small Institutions
Bundle (up to 300 members)
|IOU Complimentary Member level||Annual Fee|
|IOU Complimentary Member
The IOU is aware that even the very low IOU membership dues may not be affordable by some ornithologists or citizen scientists and that certain countries do not allow payments to a foreign account. Therefore, this type of membership is available upon application and will be paid and awarded by the IOU.