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

Explain about the proteins, Explain about the Proteins? Proteins, as yo...

Explain about the Proteins? Proteins, as you may already know, are made up of carbon, hydrogen, nitrogen, oxygen and usually sulphur. Proteins are built up of a large number of

Intermediate and the definitive hosts of the plasmodium, Q. What are the in...

Q. What are the intermediate and the definitive hosts of the plasmodium? In the life-cycle of the plasmodium humans are the intermediate hosts (where asexual reproduction takes

Symptoms of celiac disease, Q. Symptoms of celiac disease? The list of ...

Q. Symptoms of celiac disease? The list of symptoms as mentioned in various sources for celiac disease includes: • Digestive symptoms - diarrhoea, abdominal pain, abdominal

Show the process of cell-to-cell communication, On the overall process of c...

On the overall process of cell-to-cell communication within the nervous system, what role does the Ca2+ play in the synapse? A) contributes in the biosynthesis of acetylcholine B)

Explain about periimplant probing depth, Periimplant Probing Depth In c...

Periimplant Probing Depth In contrast to natural teeth, for which the average periodontal probing depth (PD) has been reported, the physiologic depth of the periimplant sulcus

Define male and female ascaris lumbricoides, Define Male and Female Ascaris...

Define Male and Female Ascaris Lumbricoides? Ascaris lumbricoides unlike most free-living nematodes and a large number of parasites of plants and animals are not tiny or micro

Define iodothyronine deiodinases - functions of selenium, Define Iodothyron...

Define Iodothyronine Deiodinases - functions of selenium in humans? Another group of selenoproteins are the iodothyronine deiodinases essential for the conversion of thyroxine

How are the concepts of dna, How are the concepts of DNA, gene, proteins an...

How are the concepts of DNA, gene, proteins and characteristics of living beings related? Characteristics of organisms depend on chemical reactions that happen in them. These r

How implant design and surface affect osseointegration, Q. How Implant desi...

Q. How Implant design and surface affect osseointegration? Implant design Most conductive design for osseointegration is root form. They can be threaded, hydroxyapatite co

What are the obstructive lesions of aorto pulmonary window, what are the Ob...

what are the Obstructive Lesions of Aorto Pulmonary Window? These lesions can be divided into two groups: 1) Ventricular outflow obstructive lesions i.e. Aortic Stenosis (AS) P

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