钢霰弹 从19世纪后期以来,人们开始认识到,用铅弹头射猎水鸟,会使鸟由于铅中毒而死亡。1959年,一位名叫弗兰克·贝尔罗斯的野生动物学家,对北美的水鸟因铅弹头中铅的影响和铅中毒进行了15年的研究,研究结果发表在称为“贝尔罗斯报告”上。结论之一是,由于铅中毒引起的北美水禽每年以2～3％减少。实际上,这仅仅是根据不充分资料的粗略估算。贝尔罗斯的研究是根据由以打猎为生的猎人提供的他们打下来的健壮的水禽,检查其砂囊(胃、内脏)。在研究中发现,这些水禽无 Shotgun Since the late 19th century, people began to realize that the use of lead bullets to shoot waterfowl, will make the bird died due to lead poisoning. In 1959, a wildlife scientist named Frank Belrose conducted a 15-year study of the effects of lead in lead warheads and lead poisoning in North American waterfowls, and the findings were published in the so-called Beloros Report . One of the conclusions is that North American waterfowl caused by lead poisoning is reduced by 2 to 3% annually. In fact, this is only based on rough estimates of inadequate information. Bel Rose's study examines the gizzard (stomach, viscera) of sturdy waterfowl from hunters hunted for hunting. In the study found that these waterfowl no