Flightless birds, Biology

Assignment Help:
#Most of the world''s flightless birds are either nocturnal and secretive (e.g. the kagu) or large, swift and well-armed (the ostrich). The exceptions are found primarily on islands, and many of these island species have become extinct with the arrival of humans and their domestic animals.

What special biogeographical conditions on islands might permit the survival of flightless birds? Why has the colonization so often resulted in the extinction of such birds? The power of flight has been lost secondarily in representatives of many groups of birds; what are some possible evolutionary advantages of flightlessness that might offset its obvious disadvantages?

Related Discussions:- Flightless birds

What is the mendel’s first law, the Mendel's first law? A Mendel's firs...

the Mendel's first law? A Mendel's first law postulates that a characteristic (trait) of an individual is always determined by two factors, one inherited from the mother and th

Define effect of protein excess during pregnancy period, Define effect of P...

Define effect of Protein excess during pregnancy period? It is not advisable to recommend protein supplements. Reports in the literature indicate that high-protein supplements

Strategie of the anti-retroviral drug used in aids treatment, Q. What are s...

Q. What are some strategies of the anti-retroviral drugs used in the AIDS treatment? The Anti-retroviral drugs used in AIDS treatment try to approach any of the several steps o

Geothermal energy, It is that energy which lies, embedded within earth's cr...

It is that energy which lies, embedded within earth's crust. In some places heated water comes out through the surface of earth as hot spring or steams. This hot geothermal water o

Explain environmental resistance and the population growth, What is the rel...

What is the relationship among environmental resistance and the population growth according to the biotic potential curve and the real population growth curve? The difference

Differences between hypothesis and theory, DIFFERENCE S BETWEEN HYPOTHESIS...

DIFFERENCE S BETWEEN HYPOTHESIS AND THEORY -     1. Hypothesis   It is a reasoned or educated guess about a     1.

The difference between high and low c, How does brain recognize difference ...

How does brain recognize difference between high and low c and soft and loud sounds?

Define viscosity - function of proteins, Explain Viscosity of proteins ...

Explain Viscosity of proteins Viscosity reflects resistance to flow. The  main  single factor influencing the viscosity  behavior  of protein  fluids  is   the  apparent  diame

Determine some assessment measures of zinc, Determine some assessment measu...

Determine some assessment measures of Zinc? Measurement of zinc in plasma: This is the most common method. Fasting concentrations of less than 70 μg/litre suggests deficie

State about the recti and oblique muscles, State about the Recti and Obliqu...

State about the Recti and Oblique Muscles The extra-ocular muscles are mainly involved in the maintenance of postural tonicity and performance of quick contractions. These mus

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd