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 management of parkinson''s disease, Define Management of Parkinson...

Define Management of Parkinson's Disease - Drug, Feeding and Nutritional Care? There is no cure yet for Parkinson's disease, but its symptoms can be minimized with drug thera

List principles to keep in mind for designing the messages, Q. List princip...

Q. List principles to keep in mind for designing the messages? o Develop a positive theme. Approaches are more effective when they promote positive messages that state clear

Significance of gastrulation, SIGNIFICANC E OF GASTRULATION - It resul...

SIGNIFICANC E OF GASTRULATION - It results in the formation of three germ layers. It also resutls in the formation of different organs & organ systems. Gastrulation is e

Pisces fish, description on characteristics of pisces fish

description on characteristics of pisces fish

Eukaryote, Eukaryote is the type of cell found in several organisms includ...

Eukaryote is the type of cell found in several organisms including single-celled protists and multicellular fungi, plants, and animals as well; characterized by a membrane-bounded

Explain about implant surgery, Explain about implant surgery Diagnosis ...

Explain about implant surgery Diagnosis and treatment planning for a patient who requires and is to receive dental implants. The actual process of dental implant placement begi

Difference between mussels and octopuses, Q. What is the difference between...

Q. What is the difference between mussels and octopuses regarding their circulatory systems? How does that difference influence the mobility of these animals? Cephalopod mollus

Conditions necessary for outbreak in salmonellosis, Q. Conditions Necessary...

Q. Conditions Necessary for Outbreak in salmonellosis? The food must contain or become contaminated with the Salmonella bacteria. These bacteria must be there in considerable n

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