What distinguishing dietary characteristic separates Grevy's zebras from the Plains Zebra regarding grass selection?

Answer

Grevy's zebras are more selective, focusing grazing efforts on the finest grasses available

Among the three main zebra species, Grevy's zebras, found in drier environments, are noted as the most selective feeders. While Plains Zebras are adaptable bulk feeders consuming medium to tall grasses, Grevy's zebras concentrate their grazing on the finest and shortest grasses available. This selectivity, combined with their noted tendency to incorporate a higher proportion of browsing into their diet compared to Plains Zebras, allows them to subsist successfully in areas where competition for bulk grass resources is intense.

What distinguishing dietary characteristic separates Grevy's zebras from the Plains Zebra regarding grass selection?
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