In comparison with the flight of the True Eagle, the movements of the Haliaëtos in the air are slow and heavy; upon the ground, however, it moves with great facility, and can dive to a certain depth. In the development of its senses it is not inferior to its more noble relatives, but, unlike them, combines so much cruelty and rapacity with its courage as to deprive its disposition of that majesty popularly attributed to the King of Birds. The breeding season commences about March, and though each male has but one mate during its entire life, many and frequent are the battles that arise about the possession of these often very hardly-earned partners. Count Wodzicki gives an interesting account of the pertinacity and fury with which these disputes are sometimes carried on. Two male Eagles, he tells us, that came under his own observation, fought almost incessantly, falling upon each other with beak and claws, and rolling upon the ground until their feathers flew in all directions and blood flowed. During these encounters the female sat apart, and rewarded the victor by her caresses, with the utmost indifference as to which of the two should obtain her for his mate. After a fortnight spent in constant battles, the strongest bird remained for the time in possession of the field, but no sooner did the pair leave their eyrie, after rearing their young family, than the disappointed rival at once renewed his attacks with so much ferocity as to kill his adversary, after a short but severe struggle.