David Attenborough voice
Over the centuries of isolation, different bat pony tribes have adopted different feeding habits to best accommodate their members. The black-furred thestrals of the Eisenwing, having an advantage in nocturnal hunting, found large insects to be easy prey. The members of the Sentinel Confederation, having a genetic disorder that renders them blind as they age into adulthood, have come to prefer fruits. None know for sure the origin of the Dark Hearts' turn toward blood-feeding, but it may have to do with the rumors of vampiric infection among their upper ranks.