Let's look at the sentences you wrote:
“Some can’t fly, like emus and kiwis. Others, like birds-of-paradise, have bright feathers.”
These sentences are mostly correct! But let's understand them better:
- First sentence: "Some can’t fly, like emus and kiwis." This means some birds can't fly and gives examples (emus and kiwis). This sentence is clear and correct.
- Second sentence: "Others, like birds-of-paradise, have bright feathers." This means other birds, such as birds-of-paradise, have bright feathers. This sentence is also correct.
If you want, you can make the sentences even clearer by adding the word "birds" to show you are talking about birds:
- "Some birds can’t fly, like emus and kiwis."
- "Other birds, like birds-of-paradise, have bright feathers."
This way, it's very clear you are talking about birds all along.