A health monitoring system for caged birds is described. An enclosure containing sensors and associated circuitry mounts to the outside of a bird cage with a perch protruding into the cage.The sensors included in the present embodiment are a strain gauge load cell for bird weight measuring, a temperature sensor, and an ambient light sensor. The load cell is used with a perch such that the birds weight can be measured whenever they alight upon the perch. Also included is a piezoelectric sensor to measure vibration data from the cage itself, which is used as a proxy for the birds activity level. Associated circuitry and software processes and transmits this data to an internet-hosted server. The user can access this information to track a caged birds weight, activity level, and environmental conditions over time.