What makes birds (81)___ from other animals is feathers. Birds also have wings and hollow bones.Birds that can fly:☆ Birds flap their wings and (83)___ air pressure to fly.☆ Birds are light enough to fly with the (84)___ of hollow bones.Birds...
各种鸟类的特征(The characteristics of various birds).doc,各种鸟类的特征(The characteristics of various birds) Aves is a class of vertebrate in biological taxonomy. The birds are bipedal, constant temperature, oviparous vertebrates, wearing a feathere
各种鸟类的特征(Thecharacteristicsofvariousbirds)Avesisaclassofvertebrateinbiologicaltaxonomy.Thebirdsarebipedal,constanttemperature,oviparousvertebrates,wearingafeatheredforelimbsofwings,ahardbeak.Bird'sbodysize,thereisalsoasmallhummingbirdostrichandEMU(abodyfoundinAustralialargeflightlessbird).Atpresent,therearemore...
国际分类:25类-服装鞋帽 服务项: 2501夹克(服装)、裤子; 2507鞋(脚上的穿着物)、运动鞋、鞋、系带靴子、体操鞋、凉鞋、靴; 2508帽子; 基本信息 商标名称特翔鸟 CHARACTERISTICS OF BIRDS 申请号13077857国际分类25类-服装鞋帽商标分类表 商标状态商标无效申请日期暂无 ...
Any of the physical traits in a sexually mature animal that are not directly involved in the act of reproducing. They include breast development in female primates, facial-hair growth in young men, the growth of antlers in antelopes, and colorful plumage in male birds. The appearance of second...
Songbird, any member of the suborder Passeri (or Oscines), of the order Passeriformes, including about 4,000 species—nearly half the world’s birds—in 35 to 55 families. They are alike in having the vocal organ highly developed, though not all use it t
Bycatch of birds wintering in Lithuanian coastal waters in gillnets was investigated in the wintering season 20012002. Vulnerability of different bird spec... MindaugasDagys,RamūnasŽydelis - 《Acta Zoologica Lituanica》 被引量: 21发表: 2002年 The Occurrence and Distribution of Dolphins in Zanziba...
Birds also have short, stubby tail skeletons, but they manage to walk quite well on their hindlegs. Birds manage this by angling the thighs forward to get their feet under the body’s center of gravity. They hold their thighs at this unstable angle with extensive hip and thigh muscles. ...
cold, however, is not the only threat to the newly hatched young. The number of “unemployed” adults in the colony increases with the addition of those who have lost eggs or chicks, and such birds have been known to interfere with parents that have young and cause increased chick ...
Using DNA fingerprinting we estimated the reproductive success of 49 adult birds belonging to 16 breeding groups of the sexually monomorphic brown skua ( C... MILLAR CRAIG D.,ANTHONY INDU,LAMBERT DAVID M.,... - 《Biological Journal of the Linnean Society》 被引量: 179发表: 0年 ...