Kate Wilhelm's Sweet Birds: How protecting a species can endanger it

"The musical, measured Where Late the Sweet Birds Sang, by Kate Wilhelm — which won the Hugo in 1977 — is an artful admixture of clones and poetry, with a message that'll never get old... Anyway, let me tell you about the book."

You can read the full article by Josh Wimmer about this intriguing book at the io9 website. I've not read the book yet, but I shall now be on the lookout.