YA: teenager held captive on island and given wings as experiment

[Maggie]

I read this in middle school about 10 years ago. I can still picture the soft blue of the paperback’a cover and yellowed pages. I’m guessing by the condition it was published in the 90s but that’s a total guess. One thing for sure, it’s NOT Maximum ride or any in the series

I remember a teenager woke up in a cage and throughout the book gathered that she (he?) was on an island. Other experiments were in cages next to her, some that had failed and their animal parts did not work properly. She was given wings and spent a majority of the book trying to figure out how to get away. I don’t remember her captors ever being introduced but it was 10 years ago. I’m pretty sure she helped others escape and they were all free of the cages but remained on the island. By the end of the book she found beauty in this island and her newly attached wings and did not try to leave the island.

Going off from my memory of where this book was in the library, the authors last name had to be early in the alphabet, possibly not past D. I hope that’s enough for some help! It bugs me so much that I can’t remember, I’m about to drive the 2 hours and storm in the library myself

[Tab]

Dusk , maybe?