Which is the amphibian adaptation of birds?

Their forelimbs have become modified into wings for flying. All modern birds evolved from ancestors that could fly. Some modern birds, like penguins and ostriches, don't fly today. But they still have feathers and wings.

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hope, it helps.
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? Moist skin
? Hooks and suckers
? Pneumatic bones
? Dry and non glandular skin
? Metamerism

These are the options
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