Why it evolved

The prolonged drought on the Ghostlight Plains, where super-saline brines are the only water source, selects for individuals capable of enduring longer periods without access to liquid. This descendant has evolved water-storing humps, similar to desert animals on Earth, and a thickened, less permeable epidermis to reduce water loss in the thin, dry atmosphere. This adaptation comes at the cost of increased weight, necessitating a reduction in wing surface area and thus reducing its aerial maneuverability and ability to stay aloft for extended periods.