There are four bird species in Sydney that are considered by many people a real menace, that is feral pigeons, the Indian myna, sparrows and starlings. These birds are known to cause considerable damage by defacing walls, tiles and pavements, nesting in gutters, down pipes and roofs, leaving droppings on window sills, doors and footpaths.
Birds can be a health risk, they can look unsightly and can also cause an outbreak of a bird mite infestation. Bird mites can make you feel very uncomfortable and in some cases cause a severe allergic reaction.
Birds are opportunistic, determined and persistent, they can enter roof cavities and eaves via openings as small as 25mm. Once they decide to take up residence in your home or office, it can be often very difficult to deter them. The only way to get rid of that problem is to implement appropriate bird control measures.