In a bit of foreshadowing, Victoria says Howard starred in a production of Charley's Aunt (1941) while in college. The play involves a young man who masquerades as his aunt.
When Victoria is talking about Howard Griffin to Jessica, she says that he had been a part-time actor but mostly drove a cab. This recalls Jeff Conaway's character Bobby Wheeler in Taxi (1978), where he was also an aspiring actor who drove a taxi while waiting for his big break.
The title is based on the common expression: "Birds of a feather flock together." This expression has been around since at least the 16th century as: "Birds of one kind and color flock and fly always together."
The phrase in French is "La Cage aux Folles", which is the title of a play, movie and Broadway musical about a drag queen.