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

Define broken instrument removal procedures, Define Broken Instrument Remov...

Define Broken Instrument Removal Procedures File or reamer Gates-glidden Peso drills Lentulo spiral paste fillers Thermomechanical gutta-percha computer

Symmetry system characterized in echinoderms, Q. How are the nervous and th...

Q. How are the nervous and the symmetry system characterized in echinoderms? Adult echinoderms, along with cnidarians, are the animals that present radial symmetry that is thei

How is litmus paper, How is litmus paper and testing for acid, base, and ne...

How is litmus paper and testing for acid, base, and neutral, related to biology?

Phylogenetic systems of classification, Q. Phylogenetic systems of classifi...

Q. Phylogenetic systems of classification? As already pointed out 'earlier that in Phylogenetic system, the plants are classified according to their evolutionary relationships.

What are the components of a balanced diet, Components of a Balanced Diet ...

Components of a Balanced Diet Food which we eat, has effect on the growth and development, and the maintenance of normal body functions. Hence, a good balanced diet is needed t

collection of solid waste, There are three methods of collections: 1.  ...

There are three methods of collections: 1.      Kerbside collection: In this collection system the refuse is brought in containers and placed on the footway, from where it is

Explain cap site, Cap site Two usages are given below: 1] In eukaryotes...

Cap site Two usages are given below: 1] In eukaryotes, the cap site is position in the gene at which transcription begins, and really should be called the "transcription initia

Explain the vertical implant position, Vertical Implant Position: The i...

Vertical Implant Position: The implant can be submerged in the bone up till the level, where it is surface treated or further embedded till its shoulder, depending upon the sit

Explain antibacterial activity, Antibacterial activity   Rifaximin reach...

Antibacterial activity   Rifaximin reaches high concentrations in the intestinal tract and is active in vitro against a broad range of enteropathogens, including ETEC, EAEC, Shi

Why networking in hospitals, WHY NETWORKING IN HOSPITALS Sharing of dat...

WHY NETWORKING IN HOSPITALS Sharing of data is essential, especially in any kind of hospital setting. For staff and doctors of a hospital, if they have details of patients rea

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