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

Adenine and thymine in complementary strands dna molecule, A "phosphodieste...

A "phosphodiester bond" links together: Answer the 3' hydroxyl group and the N9 atom of adenine in ATP. The Phosphate group and N9 atom of adenine in ATP. Sequential nucleosides in

Tolerance to cold and freezing temperatures, Normal 0 false f...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What is hmp pathway, What is HMP pathway? Give any two points of its signif...

What is HMP pathway? Give any two points of its significance The HMP  is an alternate oxidative pathway for the metabolism of glucose. The significance of the pathway  is that

Euthenics, Euthenics : It is the study of improvement of human races by pro...

Euthenics : It is the study of improvement of human races by providing better conditions. Euthenics means human improvement by altering external factors like as education or the co

Which term describes hereditary with high level of uric acid, In studies of...

In studies of human body, which of the below terms is used to describe hereditary condition associated with an excessively high level of uric acid in blood? a) Uric ptosis b

Planning of nursing care - hypospadias, Planning of Nursing Care Planni...

Planning of Nursing Care Planning of the nursing care depends on the decision of the surgery. The surgery may be performed in two stages depending upon the degree of the d

Define the prevention of diseases - function of vitamin e, Define the Preve...

Define the Prevention of diseases - Function of Vitamin E? Because of its anti-oxidant function and its role in inhibiting cell proliferation of smooth muscles, vitamin E can b

What is the functional unity of the kidneys, Q. What is the functional unit...

Q. What is the functional unity of the kidneys? The functional (filtering) unity of the kidneys is the nephron a nephron is made of efferent arteriole, afferent arteriole, glom

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