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- Mallard - Wikipedia
The mallard is considered to be a species of least concern by the International Union for Conservation of Nature (IUCN), and, unlike many waterfowl, is considered an invasive species in some regions
- mallard_百度百科
mallard（英语单词），英式发音 [ˈmælɑːd]，美式发音 [ˈmælərd]，作名词时指雁形目鸭科动物绿头鸭（学名Anas platyrhynchos），其雄性个体头部呈深绿色，为家鸭祖先，广泛分布于美洲、欧洲、亚洲及大洋洲的温带与亚热带地区。
- Mallard - eBird
A good view of the wing can be helpful, too: white wingbars on the leading and trailing edges of the blue wing patch are bolder on Mallard Frequently hybridizes with those species, which can be even more confusing
- Mallard Identification, All About Birds, Cornell Lab of Ornithology
Meet the Mallard! This quick 2-minute introduction presents all the basic information you need to know about this common North American bird, from identification to foods, nesting behavior, range, and more
- Mallard | Audubon Field Guide
Abundant over most of the northern hemisphere, the Mallard is the most familiar wild duck to many people, and the ancestor of most strains of domesticated ducks
- 绿头鸭 - Mallard - Anas platyrhynchos - 懂鸟 - 鸟类图片鸣声识别与资讯
绿头鸭 （英文名：Mallard，学名： Anas platyrhynchos），是雁形目鸭科鸭属的鸟类。 又名: 大头绿（雄）、蒲鸭（雌），常见鸭类，广泛分布于北美洲、欧亚大陆和北非，已引入新西兰、澳大利亚等地。 雄鸟头部呈绿色光泽，雌鸟羽色杂褐色。
- Mallard | National Geographic
Meet the mallard—likely the most populous duck on Earth Learn the survival secrets that allow this duck to thrive around the globe
- Mallard | Anatomy, Migration Diet | Britannica
Mallard, (Anas platyrhynchos), abundant “wild duck” of the Northern Hemisphere that is the ancestor of most domestic ducks Breeding throughout Europe, most of Asia, and northern North America, mallards winter as far south as North Africa, India, and southern Mexico
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