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Also known as gallinaceous birds, galliforms, gamefowl, gamebirds
Galliformes , also known as gallinaceous birds or landfowl, is an order of heavy-bodied terrestrial birds that contains about 290 species. The order is divided into five families: Phasianidae (chicken and junglefowls, Old World quails, partridges, pheasants, turkeys, peafowl and grouse), Odontophoridae (New World quails), Numididae (guinea fowl), Cracidae (including chachalacas and curassows), and Megapodiidae (incubator birds like malleefowl and brushturkeys). Galliformes and the semi-aquatic order Anseriformes (waterfowl) are collectively called fowl.
Galliformes, also known as gallinaceous birds or landfowl, is an order of about 290 heavy-bodied terrestrial bird species that includes chickens, pheasants, turkeys, quails, and guinea fowl across five different families. These birds matter because they represent a major group of land-dwelling birds and include species that are economically important to humans as food sources and are familiar parts of many ecosystems worldwide.
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hönsfåglar
Galliformes
ORDER
鸡形目(学名:Galliformes)在生物分类学上是鸟纲中的一个目。人们通常把这一目的鸟中体形较大种的统称为“鸡”,体形较小的一些种类称为“鹑”。由于这一目的鸟腿脚强健,擅长在地面奔跑,按生态习性,被称为陆禽。这一目中的鸟有些体态雄健优美,色彩艳丽,其中不少是珍稀物种和经济物种,与人类的生活关系密切。 目录 1 分类 2 分布 3 形态特征 4 习性 5 保护 6 与人类文化的关系 7 参见 8 参考 分类 在鸟类DNA分类系统中,林鹑科和拟鹑科,不再归属于鸡形目,而是归属于鹤形目。 雉科(Phasianidae) 松鸡科(Tetraonidae) 塚雉科(Megapodiidae) 凤冠雉科(Cracidae) 珠鸡科(Numidiidae) 吐绶鸡科(Meleagrididae) 齿鹑科(Odontophoridae) 拟鹑科(Mesitornithidae) 分布 鸡形目的鸟在除南极洲外的各大洲都有分布,都是陆栖鸟类,并多为留鸟。 形态特征 鸡形目中的雉类体形较大,一般与家鸡相似,雌雄体色多不同,雄性羽毛多彩而艳丽,雌性羽色黯淡。被称为鹑的一类体形较小,羽色灰暗。鸡形目的鸟喙短而强健,翅为短圆形,适于短距离飞行和迅速起飞。有些雉类的头胸部有肉垂,发情期时会充血、充气。 它们的尾退化,很短,但雉类的鸟尾羽发达,有些种类有特别延长的中央尾羽。尾羽不仅是飞行中控制方向的舵,也是求偶是重要的炫耀部位。它们也有发达的尾脂腺,而且皮肤裏也有能分泌脂肪的细胞,这些油脂可以保护羽毛和防水。它们的腿发达有力,雉类的雄性都有距,有的种类雌性也有,这是鸡形目特有的炫耀器官。鸡形目鸟的脚三趾在前,大趾在后,几乎成一个平面,利于行走。鸡形目的鸟胸骨发达,附有强健的肌肉。 习性 鸡形目的鸟食性很杂,主要取食植物,昆虫和其他部分动物。觅食是多用脚袍挖后用喙取食。 鸡形目的鸟一般体色较平淡的种为单配制,体形大、雄性羽色绚丽的种是多配制。有些雉类的鸟到繁殖期有复杂的炫耀行为。有些雉类的头胸部有肉垂,发情期时会充血炫耀。有的种类如松鸡科的鸟具有复杂的集体发情行为。 鸡形目的鸟筑巢粗糙,常营地巢,接着倒木或灌丛的形状,铺以草和羽毛。雌鸟在孵卵期间腹部羽毛大量脱落,形成孵卵斑。雏鸟为早成雏,多是一年性成熟,也有些体性大的种类要二到三年才性成熟。 保护 这一目中的鸟很早就是人类和其他食肉动物取食的对象,人类通过驯养的方法,使其种的一些称为家禽。由于鸡形目的鸟分布具有地域性,有些种为一些地区所特有,人类活动的入侵,使其栖息地受到很大的压缩。目前这些种类多进入世界性的保护名录,也成为当地首保护的物种。但当地人的习惯还需时间去改变,人类猎杀和捡拾鸟蛋的做法在某些地区还有出现。 另外,由于鸡形目种的雉类羽色绚丽、形态健美,招致了人们的喜爱,而刺激了标本、羽毛工艺品的交易,而此目中许多种类的人工繁殖还
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Galliformes , also known as gallinaceous birds or landfowl, is an order of heavy-bodied terrestrial birds that contains about 290 species. The order is divided into five families: Phasianidae (chicken and junglefowls, Old World quails, partridges, pheasants, turkeys, peafowl and grouse), Odontophoridae (New World quails), Numididae (guinea fowl), Cracidae (including chachalacas and curassows), and Megapodiidae (incubator birds like malleefowl and brushturkeys). Galliformes and the semi-aquatic order Anseriformes (waterfowl) are collectively called fowl.
Galliform birds have adapted to most environments except innermost deserts and perpetually icy regions, inhabiting every continent except Antarctica. They are important in their ecosystems as seed dispersers and insectivores/vermivores, and many are skilled ground-dwellers that escape predators by running rather than flying. They are sexually dimorphic, and males of most species are more colorful than the females, with often elaborate courtship behaviors that include strutting, fluffing of tail or head feathers, and vocal sounds. They are mainly non-migratory.
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