Urbanization affects the bird life in a number of ways. Ambient noise, lack of suitable nesting sites and foraging material in urban landscape often impose a selection pressure on birds. Analysis of the data revealed that in urbanized habitats, the red-vented bulbul (RVB; Pycnonotus cafer) often altered its breeding behaviour in a number of ways like selection of unusual sites for nesting (such as nesting in buildings, wall holes and electric fixings), exotic plants for nesting and polythene pieces, paper pieces, threads, rags, and the like as nesting material. Breeding success was higher in urban areas than in forests. Plasticity in song characteristics, namely, increases in minimum and dominant frequencies and amplitude shifts were also observed. Basically, the red-vented bulbul is a wild species, and in forest, it forages mostly upon a number of wild fruits, while in urban areas, this species is seen foraging upon a variety of food, including kitchen waste. Such shifts in behaviour are examples of rapid evolution and provide excellent opportunities to address scientific questions pertaining to behaviour and evolution.