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 a skiers launch speed, In the aerials competition in skiing, the co...

In the aerials competition in skiing, the competitors speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform

Zoonoses disease-chikungunya, Chikungunya Chikungunya, a metazoonosis,...

Chikungunya Chikungunya, a metazoonosis, is caused by chikungunya virus belonging to genus Alphavirus of the family Togavirideae. The virus is transmitted by infected mosquito

Inverse pcr, Inverse PCR is the variation of PCR which makes the amplifica...

Inverse PCR is the variation of PCR which makes the amplification of DNA segments of unknown sequence that flank DNA segments of the known sequence possible; in short, total DNA i

Ionosinin ic pathway , how ionosinic pathway ric acid from ammonia forms ...

how ionosinic pathway ric acid from ammonia forms u

What is haccp control, HACCP Control :  a) To manage the conditions of an o...

HACCP Control :  a) To manage the conditions of an operation  to maintain compliance with established criteria. b)  The state where correct procedures are being followed  and  c

Explain sympatric and allopatric speciation, Sympatric OR allopatric specia...

Sympatric OR allopatric speciation Sympatry The development of new species within a population. Two Hebe sp living in the same location but with different chromosomal numb

What is vena cava, What is vena cava? Which type of blood circulates within...

What is vena cava? Which type of blood circulates within the vena cava? The vena cava are either of two large veins that debouch into the right atrium. The superior vena cava d

Taxonomy, Agroup of realated genera are classified as-?

Agroup of realated genera are classified as-?

Are mollusc metameric beings, Q Are mollusc metameric beings? Exclusively a...

Q Are mollusc metameric beings? Exclusively analyzing this feature could it be said that molluscs are evolutionarily proximal to nematodes or to annelids? In molluscs there is

Determine energy density of human milk, Determine Energy Density of Human M...

Determine Energy Density of Human Milk? The energy density of human milk depends on the relative proportions of protein, fat and the principal carbohydrate, lactose. Lactose co

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