Surprisingly, I’d never read the Hugo Award winner for Best Novel 1977.
It’s original and excellent. Far ahead of its time.
Where Late the Sweet Birds Sang is a science fiction novel by American writer Kate Wilhelm,
The collapse of civilization around the world has resulted from massive environmental changes and global disease, which were attributed to large-scale pollution.
… one large family founds an isolated community in an attempt to survive the still-developing global disasters.
As the death toll rises, mainly to disease and nuclear warfare, they discover that the human population left on earth is almost universally infertile.
From cloning experiments … the scientists in the small community theorize that the infertility might be reversed after multiple generations of cloning, and the family begins cloning themselves in an effort to survive.
The assumption is that after a few generations of cloning, the people will be able to revert to traditional biological reproduction. …
What could go wrong?
… only “naturally” produced human in the community, Mark, seeks his own solution to the problem, and by force he leads a group of fertile women and children to abandon the community and start over …
The title of the book is a quotation from William Shakespeare’s Sonnet 73.

Christine Sandquist REVIEW.