On Monday, September 10, 1945, farmer Lloyd Olsen of Fruita, Colorado, had his mother-in-law around for supper and was sent out to the yard by his wife to bring back a chicken. Olsen failed to completely decapitate the five-and-a-half month old bird named Mike. The axe missed the jugular vein, leaving one ear and most of the brain stem intact.
On the first night after the decapitation Mike slept with his decapitated head under his wing.
Despite Olsen's botched handiwork, Mike was still able to balance on a perch and walk clumsily; he even attempted to preen and crow, although he could do neither. After the bird did not die, a surprised Mr. Olsen decided to continue to care permanently for Mike, feeding him a mixture of milk and water via an eyedropper; he was also fed small grains of corn. Mike occasionally choked on his own mucus, which the Olsen family would clear using a syringe.
When used to his new and unusual center of mass Mike could easily get himself to the highest perches without falling. His crowing, though, was less impressive and consisted of a gurgling sound made in his throat, leaving him unable to crow at dawn. Mike also spent his time preening and attempting to peck for food with his neck.
In March 1947, at a motel in Phoenix on a stopover while traveling back home from tour, Mike started choking in the middle of the night. As the Olsens had inadvertently left their feeding and cleaning syringes at the sideshow the day before, they were unable to save Mike. Lloyd Olsen claimed that he had sold the bird off, resulting in stories of Mike still touring the country as late as 1949.