flightless
പറക്കാൻ
definition
adjective
The flightless birds and insects of such islands had clearly lost a highly complex function.
(of a bird or an insect) naturally unable to fly.
example
Until the late Pleistocene era 11,000 to 50,000 years ago, big, exotic mammals and 'flightless' birds roamed the planet.
Whether the 'flightless' birds used their beaks to impale or bludgeon their prey is unknown, Chiappe says.
The tam is thought to have evolved to survive passage through the gullet of the island's biggest, 'flightless' bird, the dodo.
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.
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?
The 'flightless' birds and insects of such islands had clearly lost a highly complex function.
Moas were ratites, 'flightless' birds considered the sister group of all other birds.
Thus spores and minute, winged insects stay suspended longer than seeds and large, 'flightless' insects.
The kakapo, a 'flightless' bird, was particularly vulnerable to predators.
Penguins are 'flightless' birds that are highly specialized for swimming and diving, and spend much of their life at sea.
Rheas are large 'flightless' birds native to South America.
Darwin didn't need to put his theories through contortions to account for 'flightless' birds and cave fish.
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.
Cassowaries belong to a primitive group of mainly 'flightless' birds called Palaeognathae.
Several people here have argued that Caudipteryx is in fact a 'flightless' bird.
Most of the birds classified in the Palaeognathae are also flightless, but not all 'flightless' birds are classified in the Palaeognathae.
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.
Small body size, 'flightlessness' , mechanical sound production, and demanding flight were associated with changes in taxic state.
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.
Irrespective of the pattern of colonization, 'flightlessness' probably evolved separately in the subantarctic teals.
This is hardly surprising as both cause 'flightlessness' .
Among island birds, 'flightlessness' made them especially vulnerable to introduced predators.
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.
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' .
At this time the males molt their feathers and go through a month-long period of 'flightlessness' while their new feathers grow in.
These creatures were plainly flightless, and the nature of their 'flightlessness' requires some special comment.
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.
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