A conservation group is working to save the bird that relies on human-made colonies, as it faces a loss of habitat, invasive species and climate change.
The first publicly available soundscape recordings of bird sounds with more than 16,000 annotations will help teach computer models to identify bird species.
No cause has been found for the mysterious illness impacting songbirds since late May. So go ahead and feed birds and fill up your birdbaths, but only after a thorough cleaning.