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

Microscope, How to calculate the magnifying power of a microscope i

How to calculate the magnifying power of a microscope i

Describe fourth heart sound in details, Describe Fourth Heart Sound in deta...

Describe Fourth Heart Sound in details? S 4 is generated during the atrial-filling phase. It is a low frequency event. LVS, is best heard over apex. Mechanism of S 4 generat

How does a population differ from a community, How does a population differ...

How does a population differ from a community? A population having of all members of a single species that live in an area, while a community consists of all organisms of any s

Determine the chemical stage of photosynthesis, Which are the subproducts o...

Which are the subproducts of the photochemical stage that are essential for the chemical stage of photosynthesis? The chemical stage of photosynthesis depends on NADPH and ATP

Explain gastric bypass - surgical management for obesity, Explain Gastric B...

Explain Gastric Bypass - surgical management for obesity? Surgery is the current 'gold standard' for bariatric surgical procedures. It involves use of a stapling device to crea

To observe yeast plants, To observe yeast plants Borrow a microscope fr...

To observe yeast plants Borrow a microscope from a college, a high school, a doctor or a hospital. Place a some drops of the sugar solution which having yeast on a glass slide

Psychological theories, Elsie is 75 and enjoys attending the women's Instit...

Elsie is 75 and enjoys attending the women's Institute and doing volunteer work in a local charity shop for a hospice. She is finding herself forgetting small things, and can't alw

Which is the vertebrate class, Q. Which is the vertebrate class that is con...

Q. Which is the vertebrate class that is considered the first entirely terrestrial? Totally independent from the aquatic habitat, The first entirely terrrestrial vertebrate cla

Phyletic lineage, explain in brief about phyletic lineage?

explain in brief about phyletic lineage?

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