Its story is a classic example of natural selection ... found throughout Eurasia and North America and can be either white or black. When black and white morphs breed, their offspring are also ...

The stunning pattern of black swallowtails has attracted the activities of many biologists and their studies provide considerable insight into the natural history black ... The first instar is black ...

The patterns also help researchers study genetics within a pod. The orca’s black-and-white bodies help them blend in with their surroundings and make them appear smaller. The darker markings shrink ...

Tegus are easy to recognize because they have a distinctive black-and-white pattern of spots and stripes, so Georgia’s Department of Natural Resources put out a call for citizens to report ...

SC Department of Natural Resources/provided Imagine ... back away from the out-sized creature with a distinctive black and white pattern as if someone used batik to dress it up.