Part of that emptiness, she’d understood. The specialist had always had a big appetite; hardly a surprise with a pegasus' metabolism on a large frame. Mom and dad couldn't tell her the sources, but there was definitely some earth pony blood in her family tree, and it manifested itself with a really big bang every now and then -- herself being one of those 'big bangs'. That she had some mixed lineage wasn't surprising either, given that both of her ancestral branches had long histories serving as weatherponies for Equestria's fertile, earth pony dominated farming regions. 