(Sacramento, CA) — More than 100 dead geese have been found after Sunday night’s rainstorm in Sacramento County. Dozens of geese were found dead on a residential street in Elverta, and about 20 more were found dead in a business district in Natomas.

Authorities have not said how the geese died. But, some residents reported hearing the sound of loud thunder before hearing a thumping on their rooftops. They believe the birds were struck by lightning.