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

Differences between the male gametes and the female gametes, State the diff...

State the differences between the male gametes and the female gametes with regard to (a) their size; (b) their structure, (c) their relative numbers.   (a

Urea, #questionwhy is urea the major nitrogenous excretory product..

#questionwhy is urea the major nitrogenous excretory product..

Organ transplant rejection, ORGA N TRANSPLANT REJECTION - Major his...

ORGA N TRANSPLANT REJECTION - Major histocompatibility complex is responsible for stimulating the rejection of tissue MHC is set of genes that code for cell surface glycopr

Molecular biology and technology, what are protein? What is the constituent...

what are protein? What is the constituential uni. Of protein? Briefly explain the various forms of protein?

Determine the diversity of biological evolution, Is crossing over important...

Is crossing over important for the diversity of biological evolution? Sexual reproduction and recombination of linked genes (crossing over) are, with mutations, the main instru

What is tubal pregnancy, Q. What is tubal pregnancy? Many times fecunda...

Q. What is tubal pregnancy? Many times fecundation takes place in the Fallopian tubes in general the newly formed zygote is taken to the uterus where nidation and the embryonic

Define factors which may lead to errors in count, Define Factors Which May ...

Define Factors Which May Lead To Errors in Count? There are many factors, which may lead to errors in count. (i) Counts may be low if the agar medium used in the technique d

Define selectivity - terminologies used in chromatography, Define Selectivi...

Define Selectivity - terminologies used in chromatography? Selectivity is a measure of preference a stationary phase shows for one solute over another and is expressed as:

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