Fascinating flightless birds
When we talk about birds, we immediately think about them as the flying entities that we mostly see around us. But there are some birds that don’t have the ability to fly like normal birds do.
These birds, known as flightless birds, have lost their ability to fly due to the evolutionary process. Among such flightless birds, the ostrich is the largest and heaviest, weighing over 100 kilogrammes, while the inaccessible island rail is the smallest, weighing about 35 grams. Some of the most well-known flightless birds include ostrich, emu, cassowary, rhea, kiwi, and of course the penguin.
Generally, flightless birds are very large in size and having lived in places where they faced no danger from predators or hunters, they gradually lost the ability to fly, unlike other birds. They became great' runners instead. They escaped predators by galloping away and fighting with their massive claws. These birds have a bulky body, long strong legs, small wing bones and lack keel, due to which they can’t fly. New Zealand has a variety of such flightless birds.
Here is a more detailed look at some famous flightless birds.
Ostrich