Summer male: black, including soft parts, with bright red shoulder patch or “epaulet,” bordered by yellow in most subspecies. Winter male: as summer male, but shows warm brown feather tips ...

Adult male: the red crown is bordered by black, with a small red patch below black nape bar; the chin and throat are red, with the red color partially invading the black malar stripe that outlines ...

Born into one of three color phases (red, black or cross), they’re distinguishable from other ... projected to shrink the foxes’ habitat as temperatures warm and push the animals farther up mountain ...