Reading about this study of songbirds in European cities, a tune began niggling at my memory. Apparently, male great tits sing higher, quicker & louder in an urban setting than do their country cousins. Then I got it. I was thinking of Mose Allison’s lyric, “If You’re Goin’ Up to the City.” Mose sings from the point of view of a jaded, hip older cousin: “If you’re goin’ up to the city you better have some cash / ‘Cause people in the city don’t mess around with trash.” But I had to play the song–it’s on my hard drive–to get the exact verse I was looking for: “If you go up to the city you got to learn to shout / If you don’t stand up and holler you gonna get left out.”