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

Fungi, is the have 100 nuclus ?

is the have 100 nuclus ?

Define derived proteins - primary protein derivatives, Define Derived prot...

Define Derived proteins -  Primary Protein Derivatives? Derived proteins are the derivatives of the protein molecule, apparently fonned through hydrolytic changes in the molecu

Effects of plant growth regulators on development, Effects of Plant Growth ...

Effects of Plant Growth Regulators on Development Like animals plants require input of energy from the outside environment to sustain growth and development. But unlike anim

What is tyrosinemia, Q. What is Tyrosinemia? There are two forms of her...

Q. What is Tyrosinemia? There are two forms of hereditary tyrosinemia. They are tyrosinemia Type I and tyrosinemia Type II. Type I was thought to be due to a deficiency of para

Blastomycosis, Blastomycosis Blastomyces dermatidis is a dimorphic fung...

Blastomycosis Blastomyces dermatidis is a dimorphic fungus existing as a mold in the soil (saprophytic stage) and as a yeast in tissues (parasitic stage). It causes systemic fu

What is the tertiary structure of a protein, The tertiary protein structure...

The tertiary protein structure is a spatial conformation additional to the secondary structure in which the alpha helix or the beta-sheet folds up itself. The forces that stay the

ECOLOGICAL PYRAMIDS, Ask questionLIMITATION OF ECOLOGICAL PYRAMIDS #Minimu...

Ask questionLIMITATION OF ECOLOGICAL PYRAMIDS #Minimum 100 words accepted#

Importance of mendelism, IMPORTANCE OF MENDELISM 1 .       Improvement...

IMPORTANCE OF MENDELISM 1 .       Improvement of Plants Hybridization is used for obtaining improved varieties of plants. This process results in combinations of desirable

Tautomeric shifts, The original DNA sequence when ,transcribed and translat...

The original DNA sequence when ,transcribed and translated would yield five successive valine residues. But the altered sequence would correspondingly read one aspartate and four s

What do you mean by ganglia, Q. What are ganglia? Neural ganglia or Gan...

Q. What are ganglia? Neural ganglia or Ganglia (singular ganglion) are structures located outside the central nervous system (for instance, beside the spinal column or near vis

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