8.) Nightingales age well; they get more attractive the older they are.
Similar to the older male sparrows, male nightingales are more sought after with age. The difference though is that the nightingales are MUCH better singers than the sparrows. With the difference growing exponentially the older they get. It’s this difference that makes female nightingales far pickier when it comes to the males they mate with, and why they’re far more likely to stick with the older ones they meet.