Birds with broken wings

A British phrase used to gently address the fact that a woman or group of women have mental health issues or other problems. It's often used to discourage men from dating women that others can see have emotional baggage.

Alfred's mother - Alfred is such a good kid I can't belive how he's had the worst luck with women.

Alfred's mothers friend - You should talk to him he's too nice he's attracting Birds with broken wings.