Main
Big photo
Wikipedia: Flightless birds are birds which lack the ability to fly, relying instead on their ability to run or swim, and are thought to have evolved from their flying ancestors. There are about forty species in existence today, the best known being the ostrich, emu, cassowary, rhea, kiwi, and penguin. It is believed by some that most flightless birds evolved in the absence of predators on islands, and lost the power of flight because they had few enemies — although this is likely not the case for the ratites (the ostrich, emu and cassowary), as all have claws on their feet to use as a weapon against predators.
![[Chendytes lawi'' and ''Oncorhynchus rastrosus]](http://images.ookaboo.com/photo/s/Chendytes_lawi_s.jpg "Chendytes lawi'' and ''Oncorhynchus rastrosus")
|
![[Mauritius Red Hen (Aphanapteryx bonasia)]](http://images.ookaboo.com/photo/s/AphanapteryxBonasia_s.jpg "Mauritius Red Hen (Aphanapteryx bonasia)")
|
 from Apokryltaros |
 from Kersti_Nebelsiek |
![[Elizabeth Bay, Isabela Island, Galapagos.]](http://images.ookaboo.com/photo/s/Flightless_cormorant_28Phalacrocorax_harrisi_29_Isabela_s.jpg "Elizabeth Bay, Isabela Island, Galapagos.")
|
![[Ornimegalonyx]](http://images.ookaboo.com/photo/s/Ornimegalonyx_oteroi_s.jpg "Ornimegalonyx")
|
 from putneymark |
from Apokryltaros |
Is there something wrong with this topic? See our policies on offensive content; if you see something wrong, contact us.
