A fox with rare black fur made a brief roadside appearance in Yellowstone National Park last week. The fox’s coloring is ...

MELANISM has long been a subject of special interest to British entomologists owing to the rise and spread of melanic varieties in many British species of moths and butterflies, such groups as the ...

This change from predominantly light to dark forms in industrial areas is called industrial melanism. Note that this change was not due to pollution making the moths darker. The dark variety had ...

Complete melanism like this has been seen before in ... making it less conspicuous to eyes lurking in the depths. However, this one looked healthy and was in search of a mate.