Bonilla observation

The Bonilla observation was an astronomical event in 1883 in which hundreds of unidentified flying objects were observed and photographed by Mexican astronomer José Bonilla.

The photographs taken during the Bonilla observation are generally regarded as one of the first known examples of photographs of "unidentified flying objects". Though the objects were assumed to be flocks of high-flying geese, astronomers have suggested more recently that Bonilla was observing a nearby comet breaking apart.