How do you answer a question like "Is the particularly round Robin that visits my bird feeder huge or just fluffy?". This talk documents my attempt to answer this question by building a smart bird feeder that tracks the weight of visiting birds, which in combination with a custom computer vision model and a night vision web cam, helped me build a data set of all the visitors to my bird feeder. Come along for Python, micro electronics with the Raspberry Pi, machine learning, and a slow pigeon inspired descent into madness. And of course the answer to the ultimate question, how heavy is this robin?