The Devil's Teardrop

Author's Note

In trying to solve Parker's puzzle, Jackie Lukas's mistake was in making an assumption: that the hawk the farmer shot would fall off the roof. It might not have. The question didn't ask how many "living hawks" were left on the roof, just how many "hawks." So the answer is this: Three hawks would remain if the dead hawk didn't fall off and the other two don't fly away. Two hawks, if the dead hawk didn't fall off and one flies away or if the dead hawk does fall off and the other two stay. One hawk, if the dead hawk falls and one of the others flies away or if the dead hawk doesn't fall and the others fly away. No hawks, if the dead hawk falls off the roof and the others fly away