yeah you want to help your cat but you have no love or respect for birds. Remeber that pigeons in world war 2 help carry messages across and helped america and britain to win wars. Their feet are no different to any other birds. The only vermin is in your heart and mind, and I can bet you discriminate against alot of other things in your life. One day you will realise that all life is to be appreciated and there is no such term as virmin, only becuase pigeons have migrated into urban life does not make them a pest. The only dirty virmin in this world are people like you who build hate up against helpless animals and pick and choose which animals you will love and which ones you will hate. The quicker we get rid of vermins like you in this world the quicker this world will become a better place.