 However, Spanish imperial eagles frequently quarrel over food with various raptors, even much larger vultures, and the raptors may at times try to kill the young of one another.In one case, in protection their own nest, an adult Spanish imperial eagle even killed a cinereous vulture, the largest accipitrid in the world.Healthy, free-flying Spanish imperial eagles are apex predators, being mostly free of natural predators themselves but they do sometimes kill each other in conflicts and rarely interspecies conflicts may too be fatal.