Why do northern spotted owls have spots on them?

Spotted Owls are dark-brown overall dappled with white. The chest and belly are marked with large, oval white spots. The facial disks are dark brown with pale marks forming an X between the eyes. The Mexican subspecies has a paler facial disk. Researcher's haven't know exactly why the some owls have spots on them, maybe it's inherited, developed, or it may came after birth.

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his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

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