The iconic pair of peregrine falcons, residents of the Campanile bell tower at UC Berkeley, have not been observed since early January. Known as Annie and Archie, these birds typically start pairing and preparing their nest during this period, with live webcams providing a window into their activities. Recently, however, the usual view of the birds was replaced by only the panoramic sights of the Bay Area, prompting concern among experts.

Cal Falcons, a group of scientists and volunteers who monitor the raptors, and renowned raptor expert Mary Malec have expressed worry over the unusual break in sightings. The absence of Annie and Archie comes at a time when similar signs from other peregrines, termed “floaters,” have diminished, a trend thought to reflect the broader impact of H5N1 on local bird populations and the ecosystem.

While it is still possible that the pair might reappear, there is growing speculation that they could have been affected by high pathogenicity avian influenza. Alternatively, the birds may have ventured off campus to hunt, shifted territories due to environmental pressures, or faced threats from larger predators, leaving the true reason for their disappearance uncertain.

The disappearance has a significant emotional impact on the community, as these birds are not only ecological indicators but also longstanding symbols of Berkeley’s natural heritage. Despite the uncertainty and potential risks involved, experts remain hopeful that new sightings or even the return of the venerable Annie and Archie will eventually provide closure to this unsettling situation.