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Volcanic sulfur may make barn owls grow redder feathers
Volcanic sulfur may make barn owls grow redder feathers,Barn owls on volcanic islands tend to have redder plumage than those on nonvolcanic islands, possibly due to an influx of sulfur in the environment.

Volcanic sulfur may make barn owls grow redder feathers

Barn owls on volcanic islands tend to have redder plumage than those on nonvolcanic islands, possibly due to an influx of sulfur in the environment.