The below message explains that eBird will be unavailable tomorrow through Thursday, Nov 17-19. Greg Hanisek
Dear eBird Regional Editors,
As you are likely aware, eBird's long-term database migration from Oracle to Postgres will be coming to an end on November 17-19. This means that all of eBird will be down on those days - including the review tools, as well as the Macaulay Library, Birds of the World - everything. More information is here: https://ebird.org/news/database-update-november-17-19-maintenance
While we will have a notification system in eBird Mobile to warn users about this, we can't reach everyone. Please feel free to distribute this information to your local birding listservs, Whatsapp groups, or other channels, including the link to the homepage article above.
Thanks for your help, and I sincerely hope everyone will be able to enjoy birding in an eBirdless world for a few days!