Noise, a prominent characteristic of cities and urban areas, can be harmful to a range of biota, especially animals dependent on acoustic communication. Urban noise, or anthrophony, is predominately low frequency, and can mask calls or put pressure on individuals to adjust their calls accordingly. Birds in urban areas appear to be singing at higher frequencies compared to their rural counterparts, but the mechanisms underlying these differences remain unresolved. Studying variation in noise levels at fine spatial scales will facilitate disentangling evolutionary from plastic responses to anthrophony, and help safeguard healthy bird populations. Along an urban-rural gradient, this study investigated the effect of urban noise on call parameters of the European robin (Erithacus rubecula). I also explored the impact of habitat size, distance from the edge of greenspaces, and distance from the nearest busy road on local noise levels. Road din was greater on weekdays, and distance from the nearest busy road was the only habitat characteristic that explained variation in local anthrophony. Minimum call frequency increased with anthrophony power density, while other call parameters were largely unaffected. These results are consistent with acoustic adaptation theory predicting increases in minimum frequency, and other plastic responses observed in robins. Because I observed differences in minimum frequency at fine spatial scales, it is unlikely that differences between urban and rural robins are due to evolutionary responses to urban din. Plasticity is a likely trait in urban birds, especially when confronted with variable noise sources and intensities. Future work should investigate the scope of this plasticity, both within robins and across urban birds.