A Summer Bird-Cage by Margaret Drabble (William Morrow and Company, 1964)
Having recently re-read The Garrick Year, which I believe was Drabble's second novel, I decided to revisit her debut, which I first read in 1979 (fifteen years after it was first published in 1964).
A Summer Bird-Cage -- the title is never mentioned in the book, but it must be a reference to something* -- is a rather tepid, underdeveloped story about two sisters, one who is recently married to a somewhat famous but completely undesirable author (he might be queer). Neither sister is very sympathetic, but there is something bracing about their nastiness, and Drabble's intelligence and eloquence are both fully displayed, especially as manifested in the first-person narrative voice. One feels that Drabble is, at this very early stage of her career, an excellent writer but a facile observer of human life. She is ahead of herself technically, which results in a polished but minor book.
*According to Wikipedia, the title of the novel is taken from a quotation from the play The White Devil by John Webster: ‘"Tis just like a summer bird-cage in a garden: the birds that are without despair to get in, and the birds within despair and are in a consumption for fear they shall never get out."