Definition of flightlessness in English:

flightlessness

noun

  • See flightless

    • ‘Numerous recessive lethal and sublethal mutations have been reported, as well as a few mutations causing flightlessness.’
    • ‘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.’