Analysis of ear patterns allows researchers close look into marsupial society
Call it a “mom club” for kangaroos. When their young are in tow, the marsupials appear to form tight-knit social groups with other mothers—and some moms are clearly more popular, according to a new study. These social gatherings might work like neighborhood watch programs, researchers say, keeping young joeys safe from foxes and dingoes, and fending off rambunctious males.
Kangaroos live in groups that can reach several hundred individuals, but their one-on-one relationships have been hard to study. So Nora Campbell turned to kangaroo ears—each of which has a unique outline and tuft pattern. Taking a page from artificial intelligence software that analyzes thean ecologist at the University of New South Wales Sydney—teamed up with her Ph.D. director, biologist Terry Ord. Every year, Ord hides in camouflage tents in southeastern Australia to count and photograph a mob of eastern gray kangaroos .
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