scientific update aristotle 's work part ibn n 's massive ''kit b al '' frederick ii eventually wrote treatise falconry ''de arte venandi cum avibus'' related ornithological observations results hunts experiments court enjoyed performing ref name egerton ref several early german french scholars compiled old works conducted new research birds included guillaume rondelet described observations mediterranean pierre belon described fish birds seen france levant belon 's ''book birds''
Natural science Biology Zoology Ornithology