Posted by Robin Diaz on August 14, 2017 at 20:11:26
http://ebird.org/content/ebird/news/2017-ebird-taxonomy-update-coming-15-august/
eBird will begin its annual taxonomy update tomorrow. The process may take a few days and you may observe some irregularities while it is in progress, as explained in the linked article. Take particular note of the caution "If you use eBird Mobile, we recommend submitting any Not submitted lists in advance of August 15."