As a serious breeder, or the concerned pet owner, it is important to understand how critical weight is indicative of health and well -being. Successful owner and breeders never ignore fluctuations and trends in an animal's weight. The weight tracking system is designed to make this important task easy and effective. The accurate scale (+/- 1g) comes with a sturdy wood triangular perch. (There are 3 different sized perches for all sizes of birds) The perch easily lifts off of the glass plate so the scale can be used for any small animal or even to measure food.