Definition of flightless in English:

flightless

adjective ˈflʌɪtləsˈflaɪtlɪs

(of a bird or an insect) naturally unable to fly.
（鸟，昆虫）天生不会飞的
Galapagos has the world's only flightless cormorant
Example sentencesExamples
- The large, flightless moa bird that roamed New Zealand in ancient times grew much more slowly than modern birds, according to a new study of their bones.
- The tam is thought to have evolved to survive passage through the gullet of the island's biggest, flightless bird, the dodo.
- Moas were ratites, flightless birds considered the sister group of all other birds.
- Penguins are flightless birds that are highly specialized for swimming and diving, and spend much of their life at sea.
- Most of the birds classified in the Palaeognathae are also flightless, but not all flightless birds are classified in the Palaeognathae.
- They acted more like huge flightless birds of prey, than the overgrown bipedal lizards of popular imagination.
- Why do those flightless birds, unique to South America, seem to replace each other in adjoining regions?
- A giant flightless bird like the dodo is on the extreme end of avian evolution.
- Caudipteryx has short forelimbs and a feathered manus and is likely to have been a secondarily flightless bird.
- Thus spores and minute, winged insects stay suspended longer than seeds and large, flightless insects.
- Until the late Pleistocene era 11,000 to 50,000 years ago, big, exotic mammals and flightless birds roamed the planet.
- Darwin didn't need to put his theories through contortions to account for flightless birds and cave fish.
- Several people here have argued that Caudipteryx is in fact a flightless bird.
- For example, the cassowary (a large flightless bird) feeds on bright blue and red fruit.
- The kakapo, a flightless bird, was particularly vulnerable to predators.
- Rheas are large flightless birds native to South America.
- Whether the flightless birds used their beaks to impale or bludgeon their prey is unknown, Chiappe says.
- The living ratites (ostriches, emus, kiwis, and the extinct moa) are an ancient lineage of flightless birds.
- The flightless birds and insects of such islands had clearly lost a highly complex function.
- Cassowaries belong to a primitive group of mainly flightless birds called Palaeognathae.

Derivatives

flightlessness

noun

Numerous recessive lethal and sublethal mutations have been reported, as well as a few mutations causing flightlessness.
Example sentencesExamples
- Small body size, flightlessness, mechanical sound production, and demanding flight were associated with changes in taxic state.
- At this time the males molt their feathers and go through a month-long period of flightlessness while their new feathers grow in.
- After incubation begins, the males migrate to molting grounds where they gather and go through a period of flightlessness.
- The diversity of glandless taxa has puzzled researchers, who have been unable to correlate the presence or absence of a gland with factors such as distribution, climate, ecology, or flightlessness.
- Although the advantage of wings in males is clear for reasons of habitat escape and mate location, the advantage of flightlessness in males remains poorly investigated.
- As long as females are abundant and brachypterous, such that males do not have to fly to locate mates, brachyptery in males should be favored due to the inherent siring advantage associated with flightlessness.
- Alongside it are exhibits demonstrating the impacts of island isolation and the evolution of large size and flightlessness among New Zealand's birds.
- Additionally, unique or unusual wing uses (nonflight functions such as visual or acoustic display, swimming, flightlessness, etc.) were also searched for in the natural histories of taxa in which state changes had occurred.
- It requires a large number of reversals to flightlessness.
- This is hardly surprising as both cause flightlessness.
- The adaptations the dodo made for island living - flightlessness and gigantism - have made understanding its evolutionary history and classifying it based on body characteristics difficult.
- If flightlessness has evolved in so many independent lineages of modern birds, why should a similar event surprise us merely because it occurred soon after the origin of birds?
- Although this chapter does not include a discussion of when and where certain key seabird traits evolved (e.g. flightlessness or wing-propelled diving), it provides the reader with a strong foundation in seabird paleontology.
- Irrespective of the pattern of colonization, flightlessness probably evolved separately in the subantarctic teals.
- Remarkably, mutation of either results in the same spectrum of phenotypes: mutants exhibit reduced viability, abnormal wing and mechanosensory bristle morphology, female sterility, and flightlessness.
- These creatures were plainly flightless, and the nature of their flightlessness requires some special comment.
- Among island birds, flightlessness made them especially vulnerable to introduced predators.
- I take delight in the power of natural selection, and it would have given me satisfaction to report that the ratites evolved their flightlessness separately in different parts of the world, in the same way that the dodo did.

Definition of flightless in US English:

flightless

adjectiveˈflītlisˈflaɪtlɪs

(of a bird or an insect) naturally unable to fly.
（鸟，昆虫）天生不会飞的
Galapagos has the world's only flightless cormorant
Example sentencesExamples
- Penguins are flightless birds that are highly specialized for swimming and diving, and spend much of their life at sea.
- Cassowaries belong to a primitive group of mainly flightless birds called Palaeognathae.
- Most of the birds classified in the Palaeognathae are also flightless, but not all flightless birds are classified in the Palaeognathae.
- The large, flightless moa bird that roamed New Zealand in ancient times grew much more slowly than modern birds, according to a new study of their bones.
- Why do those flightless birds, unique to South America, seem to replace each other in adjoining regions?
- Caudipteryx has short forelimbs and a feathered manus and is likely to have been a secondarily flightless bird.
- Until the late Pleistocene era 11,000 to 50,000 years ago, big, exotic mammals and flightless birds roamed the planet.
- Rheas are large flightless birds native to South America.
- Several people here have argued that Caudipteryx is in fact a flightless bird.
- Thus spores and minute, winged insects stay suspended longer than seeds and large, flightless insects.
- Whether the flightless birds used their beaks to impale or bludgeon their prey is unknown, Chiappe says.
- A giant flightless bird like the dodo is on the extreme end of avian evolution.
- The kakapo, a flightless bird, was particularly vulnerable to predators.
- Moas were ratites, flightless birds considered the sister group of all other birds.
- They acted more like huge flightless birds of prey, than the overgrown bipedal lizards of popular imagination.
- The living ratites (ostriches, emus, kiwis, and the extinct moa) are an ancient lineage of flightless birds.
- For example, the cassowary (a large flightless bird) feeds on bright blue and red fruit.
- The flightless birds and insects of such islands had clearly lost a highly complex function.
- The tam is thought to have evolved to survive passage through the gullet of the island's biggest, flightless bird, the dodo.
- Darwin didn't need to put his theories through contortions to account for flightless birds and cave fish.

词汇	flightless
释义	Definition of flightless in English: flightless adjective ˈflʌɪtləsˈflaɪtlɪs (of a bird or an insect) naturally unable to fly. （鸟，昆虫）天生不会飞的 Galapagos has the world's only flightless cormorant Example sentencesExamples The large, flightless moa bird that roamed New Zealand in ancient times grew much more slowly than modern birds, according to a new study of their bones. The tam is thought to have evolved to survive passage through the gullet of the island's biggest, flightless bird, the dodo. Moas were ratites, flightless birds considered the sister group of all other birds. Penguins are flightless birds that are highly specialized for swimming and diving, and spend much of their life at sea. Most of the birds classified in the Palaeognathae are also flightless, but not all flightless birds are classified in the Palaeognathae. They acted more like huge flightless birds of prey, than the overgrown bipedal lizards of popular imagination. Why do those flightless birds, unique to South America, seem to replace each other in adjoining regions? A giant flightless bird like the dodo is on the extreme end of avian evolution. Caudipteryx has short forelimbs and a feathered manus and is likely to have been a secondarily flightless bird. Thus spores and minute, winged insects stay suspended longer than seeds and large, flightless insects. Until the late Pleistocene era 11,000 to 50,000 years ago, big, exotic mammals and flightless birds roamed the planet. Darwin didn't need to put his theories through contortions to account for flightless birds and cave fish. Several people here have argued that Caudipteryx is in fact a flightless bird. For example, the cassowary (a large flightless bird) feeds on bright blue and red fruit. The kakapo, a flightless bird, was particularly vulnerable to predators. Rheas are large flightless birds native to South America. Whether the flightless birds used their beaks to impale or bludgeon their prey is unknown, Chiappe says. The living ratites (ostriches, emus, kiwis, and the extinct moa) are an ancient lineage of flightless birds. The flightless birds and insects of such islands had clearly lost a highly complex function. Cassowaries belong to a primitive group of mainly flightless birds called Palaeognathae. Derivatives flightlessness noun Numerous recessive lethal and sublethal mutations have been reported, as well as a few mutations causing flightlessness. Example sentencesExamples Small body size, flightlessness, mechanical sound production, and demanding flight were associated with changes in taxic state. At this time the males molt their feathers and go through a month-long period of flightlessness while their new feathers grow in. After incubation begins, the males migrate to molting grounds where they gather and go through a period of flightlessness. The diversity of glandless taxa has puzzled researchers, who have been unable to correlate the presence or absence of a gland with factors such as distribution, climate, ecology, or flightlessness. Although the advantage of wings in males is clear for reasons of habitat escape and mate location, the advantage of flightlessness in males remains poorly investigated. As long as females are abundant and brachypterous, such that males do not have to fly to locate mates, brachyptery in males should be favored due to the inherent siring advantage associated with flightlessness. Alongside it are exhibits demonstrating the impacts of island isolation and the evolution of large size and flightlessness among New Zealand's birds. Additionally, unique or unusual wing uses (nonflight functions such as visual or acoustic display, swimming, flightlessness, etc.) were also searched for in the natural histories of taxa in which state changes had occurred. It requires a large number of reversals to flightlessness. This is hardly surprising as both cause flightlessness. The adaptations the dodo made for island living - flightlessness and gigantism - have made understanding its evolutionary history and classifying it based on body characteristics difficult. If flightlessness has evolved in so many independent lineages of modern birds, why should a similar event surprise us merely because it occurred soon after the origin of birds? Although this chapter does not include a discussion of when and where certain key seabird traits evolved (e.g. flightlessness or wing-propelled diving), it provides the reader with a strong foundation in seabird paleontology. Irrespective of the pattern of colonization, flightlessness probably evolved separately in the subantarctic teals. Remarkably, mutation of either results in the same spectrum of phenotypes: mutants exhibit reduced viability, abnormal wing and mechanosensory bristle morphology, female sterility, and flightlessness. These creatures were plainly flightless, and the nature of their flightlessness requires some special comment. Among island birds, flightlessness made them especially vulnerable to introduced predators. I take delight in the power of natural selection, and it would have given me satisfaction to report that the ratites evolved their flightlessness separately in different parts of the world, in the same way that the dodo did. Definition of flightless in US English: flightless adjectiveˈflītlisˈflaɪtlɪs (of a bird or an insect) naturally unable to fly. （鸟，昆虫）天生不会飞的 Galapagos has the world's only flightless cormorant Example sentencesExamples Penguins are flightless birds that are highly specialized for swimming and diving, and spend much of their life at sea. Cassowaries belong to a primitive group of mainly flightless birds called Palaeognathae. Most of the birds classified in the Palaeognathae are also flightless, but not all flightless birds are classified in the Palaeognathae. The large, flightless moa bird that roamed New Zealand in ancient times grew much more slowly than modern birds, according to a new study of their bones. Why do those flightless birds, unique to South America, seem to replace each other in adjoining regions? Caudipteryx has short forelimbs and a feathered manus and is likely to have been a secondarily flightless bird. Until the late Pleistocene era 11,000 to 50,000 years ago, big, exotic mammals and flightless birds roamed the planet. Rheas are large flightless birds native to South America. Several people here have argued that Caudipteryx is in fact a flightless bird. Thus spores and minute, winged insects stay suspended longer than seeds and large, flightless insects. Whether the flightless birds used their beaks to impale or bludgeon their prey is unknown, Chiappe says. A giant flightless bird like the dodo is on the extreme end of avian evolution. The kakapo, a flightless bird, was particularly vulnerable to predators. Moas were ratites, flightless birds considered the sister group of all other birds. They acted more like huge flightless birds of prey, than the overgrown bipedal lizards of popular imagination. The living ratites (ostriches, emus, kiwis, and the extinct moa) are an ancient lineage of flightless birds. For example, the cassowary (a large flightless bird) feeds on bright blue and red fruit. The flightless birds and insects of such islands had clearly lost a highly complex function. The tam is thought to have evolved to survive passage through the gullet of the island's biggest, flightless bird, the dodo. Darwin didn't need to put his theories through contortions to account for flightless birds and cave fish.
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