Summary:
At first, the bird and bat droppings were taken just for their nuisance value. In the 1950s, the ASI had installed new doors, which outlived their utility. There are several small and large windows inside the minaret to allow light and air circulation. "These can cause a lot of damage to ancient building surfaces, resulting in the scarring of building fabric and damaging of appearance. The ones being installed now are fixed and will stay closed for most of the time.Bird poo at heritage buildings worries conservationists as these contain acids..