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.

By joining you will have access to:

Service Details  
IOU member forum Read, inform, discuss in our IOU member forum. Learn about and discuss specific topics within our Working Groups.  
IOU member list All users of the IOU webpage with an active membership are provided with the option to maintain a user profile page and are, therefore, free to distribute their contact details, webpage etc. All active members are allowed to see such profiles.   

IOCongress fee

Registered and active IOU members will be able to register for IOCongresses at a special IOU-members-only registration fee.  
International Network An international network of ornithologists and avian biologists.  
IOU members contact Access to IOU members contact information.  
Networking Effective collaborations through contacts with other active IOU members.  
Information Information exchange with other ornithologists and avian biologists.  
Vacancies Announcements regarding positions (both paid and volunteer), fellowships, university programs, and other opportunities.  

Registration first!

Please note: Before paying your membership dues, you need to register first. If you are applying for membership at a reduced membership rate, your application with the filled application form will be sent to our Membership Committee for review and approval. You will receive confirmation of your registration as soon as possible, but if you have any questions, please email service[at]

IOU membership plans