(CNN) Robins, cedar waxwings and other birds in Gilbert, Minnesota, are flying into windshields, bumping into trees and looking mighty disoriented.

Police there say there's no need to worry -- the birds are just a little drunk.

"It appears some birds are getting a little more 'tipsy' than normal," Gilbert Police Chief Ty Techar wrote this week in a Facebook post

No, the town's birds aren't downing worm-flavored margaritas. Techar believes their confused state is the result of eating berries that have fermented earlier than usual due to an early frost.

"Many birds have not migrated south, so it appears to be more prevalent than in past years," he said. "Younger birds' livers cannot handle the toxins as efficiently as more mature birds."

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