From The City of Today is a Dying Thing: In Search of the Cities of Tomorrow by Des Fitzgerald, loc 592:
I once lived in Cardiff, which, like a lot of cities near the sea, is regularly terrorised by roaming packs of gulls. You’d see them strutting in groups around town, like a bunch of big Welsh lads, angrily guarding their ill-gotten chips and pizza. Or you’d go home to find them screaming angrily from behind your chimney pot. I truly hated those gulls. But still, I could recognise that not only were they city creatures, they had even adopted a specifically urban mode of life. They were urbanists, those gulls, as fiercely identified with that status as any bearded gentrifier.

