Maybe if the male birds are rejected for long enough they’ll mate with lions and become griffins.
When bombarded by noise pollution, some male birds begin to sing higher tunes, found a new study. And that tonal shift makes them less attractive to females. The findings suggest that birds must make difficult trade-offs in urban areas and places where traffic and industrial noises threaten to drown them out. Either they sing less appealing songs or tones in an effort to rise above the din, or they sing the songs that make them sound appealing at the risk of not being heard at all.
I can almost hear the trumpets! (Seriously, pay close attention to the visuals.)