Accommodation
Further explanation
Why some birds cannot fly?
There are a number of factors that influence the flight phenomenon like natural selection, their feeding behavior and their habitat . As we know that birds have modifications according to their surrounding environment or their feeding behavior same matter is with penguins they live in an environment where they have to feed in water that’s why they swim rather than flying and their body is modified for swimming
Types of birds
Flying birds
Flightless birds
Flying birds are modified for flight its common example is sparrow
While flightless birds are either runners or swimmers like ostrich is modified for running and penguin for swimming.
Penguins
Petrels were ancestors of penguins and their wing were modified for aerial flight only latter on they give rise to diving petrels which were able for aerial fight as well as submarine flight and in last finally penguins evolved which are modified for submarine flight only.
Morphology and habitat of penguins
They are found in southern hemisphere. While some people think that they live in Antarctica only that is a wrong concept They are also called marine birds and like to live in cold climate. Their body is white and black in color and is modified for swimming. They are carnivorous and directly feed on fish which they capture from marine water.
Answer details
Subject: Biology
Level: High school
Key words
• Why some birds cannot fly?
• Types of birds
• Penguins
• Morphology and habitat of penguins
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