In this photo provided by John Davis, Grinnel, the adult male peregrine falcon, flies in front of Sather Tower, the clock tower on the Campanile at the University of California at Berkeley campus, where the falcons' nest is in Berkeley, Calif., on May 27, 2021. Grinnell, one of a beloved pair of peregrine falcons who made their longtime home atop the bell tower at the University of California, Berkeley, was found dead Thursday, March 31, 2022. Less than 24 hours later, his partner Annie had mated with a new untagged male falcon. On Twitter Friday, Cal Falcons, a group that monitors the birds, said that a new falcon also appeared interested in incubating Annie's eggs and performed multiple courtship displays with Annie after spending the night in her gravel nest. (John Davis via AP)