flightless
பறக்கமுடியாத
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
Why do those 'flightless' birds, unique to South America, seem to replace each other in adjoining regions?
Most of the birds classified in the Palaeognathae are also flightless, but not all 'flightless' birds are classified in the Palaeognathae.
Rheas are large 'flightless' birds native to South America.
Caudipteryx has short forelimbs and a feathered manus and is likely to have been a secondarily 'flightless' bird.
Several people here have argued that Caudipteryx is in fact a 'flightless' bird.
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.
A giant 'flightless' bird like the dodo is on the extreme end of avian evolution.
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 kakapo, a 'flightless' bird, was particularly vulnerable to predators.
The living ratites (ostriches, emus, kiwis, and the extinct moa) are an ancient lineage of 'flightless' birds.
The tam is thought to have evolved to survive passage through the gullet of the island's biggest, 'flightless' bird, the dodo.
Penguins are 'flightless' birds that are highly specialized for swimming and diving, and spend much of their life at sea.
Darwin didn't need to put his theories through contortions to account for 'flightless' birds and cave fish.
For example, the cassowary (a large 'flightless' bird) feeds on bright blue and red fruit.
Until the late Pleistocene era 11,000 to 50,000 years ago, big, exotic mammals and 'flightless' birds roamed the planet.
Cassowaries belong to a primitive group of mainly 'flightless' birds called Palaeognathae.
The 'flightless' birds and insects of such islands had clearly lost a highly complex function.
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.
This is hardly surprising as both cause 'flightlessness' .
Irrespective of the pattern of colonization, 'flightlessness' probably evolved separately in the subantarctic teals.
Numerous recessive lethal and sublethal mutations have been reported, as well as a few mutations causing 'flightlessness' .
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.
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.
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.
These creatures were plainly flightless, and the nature of their 'flightlessness' requires some special comment.
Small body size, 'flightlessness' , mechanical sound production, and demanding flight were associated with changes in taxic state.
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' .
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