‘obviously there are areas which need to be reworked and improved on but there is only one company to date that has failed. although cats and birds naturally have a predator-prey relationship, some birds are better at fighting back–for example, no cat in their right mind would mess with a parrot or a macaw! i love getting a couple for christmas every year. is it cheaper to use gas as fuel or wood chips? if not managed well, you are in the bad light, always. there are three hues of wires in a typical single-pole toggle switch: black, white, and green. 