30 May 2025

Last day to submit request for Travel Visa Letter of Invitation.

30 June 2025

AOS 2025 Early-bird registration rates end.

1 July–31 July 2025

AOS 2025 Regular registration rates apply.

1 August–15 August 2025

AOS 2025 Late registration rates apply.

11–15 August 2025

American Ornithological Society (AOS) annual meeting. This will be the 143rd annual meeting of the AOS.

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