{"guid":"392b999d-a703-5c7e-a4fb-3603807672dd","title":"Rotundest Robin: Building a Smart Bird Feeder That Weighs Songbirds","subtitle":null,"slug":"emf2026-147-1-rotundest-robin","link":"https://www.emfcamp.org/schedule/2026/147-rotundest-robin","description":"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.\n\nCome 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?\n\nLicensed to the public under https://creativecommons.org/licenses/by-sa/4.0/","original_language":"eng","persons":["Hugh Evans"],"view_count":72,"promoted":false,"date":"2026-07-17T12:00:00.000+02:00","release_date":"2026-07-17T00:00:00.000+02:00","updated_at":"2026-07-22T22:45:08.367+02:00","tags":["14701","2026","emf2026","talk","Stage B","emf2026-eng","Day 2"],"length":1271,"duration":1271,"thumb_url":"https://static.media.ccc.de/media/events/emf/2026/14701-392b999d-a703-5c7e-a4fb-3603807672dd.jpg","poster_url":"https://static.media.ccc.de/media/events/emf/2026/14701-392b999d-a703-5c7e-a4fb-3603807672dd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/events/emf/2026/14701-392b999d-a703-5c7e-a4fb-3603807672dd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/events/emf/2026/14701-392b999d-a703-5c7e-a4fb-3603807672dd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/emf2026-147-1-rotundest-robin","url":"https://api.media.ccc.de/public/events/392b999d-a703-5c7e-a4fb-3603807672dd","conference_title":"Electromagnetic Field 2026","conference_url":"https://api.media.ccc.de/public/conferences/emf2026","related":[],"recordings":[{"length":1271,"mime_type":"video/mp4","language":"eng","filename":"emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_hd.mp4","state":"new","folder":"h264-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2026-07-17T17:05:10.422+02:00","label":"eng 1080p","size":132,"recording_url":"https://cdn.media.ccc.de/events/emf/2026/h264-hd/emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_hd.mp4","url":"https://api.media.ccc.de/public/recordings/102357","event_url":"https://api.media.ccc.de/public/events/392b999d-a703-5c7e-a4fb-3603807672dd","conference_url":"https://api.media.ccc.de/public/conferences/emf2026"},{"length":1271,"mime_type":"audio/mpeg","language":"eng","filename":"emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_mp3.mp3","state":"new","folder":"mp3","high_quality":false,"width":0,"height":0,"updated_at":"2026-07-17T17:06:56.055+02:00","label":"eng","size":19,"recording_url":"https://cdn.media.ccc.de/events/emf/2026/mp3/emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_mp3.mp3","url":"https://api.media.ccc.de/public/recordings/102359","event_url":"https://api.media.ccc.de/public/events/392b999d-a703-5c7e-a4fb-3603807672dd","conference_url":"https://api.media.ccc.de/public/conferences/emf2026"},{"length":1271,"mime_type":"video/mp4","language":"eng","filename":"emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_sd.mp4","state":"new","folder":"h264-sd","high_quality":false,"width":720,"height":576,"updated_at":"2026-07-17T17:07:00.300+02:00","label":"eng 576p","size":44,"recording_url":"https://cdn.media.ccc.de/events/emf/2026/h264-sd/emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_sd.mp4","url":"https://api.media.ccc.de/public/recordings/102360","event_url":"https://api.media.ccc.de/public/events/392b999d-a703-5c7e-a4fb-3603807672dd","conference_url":"https://api.media.ccc.de/public/conferences/emf2026"},{"length":1271,"mime_type":"audio/opus","language":"eng","filename":"emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_opus.opus","state":"new","folder":"opus","high_quality":false,"width":0,"height":0,"updated_at":"2026-07-17T17:07:03.861+02:00","label":"eng","size":13,"recording_url":"https://cdn.media.ccc.de/events/emf/2026/opus/emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_opus.opus","url":"https://api.media.ccc.de/public/recordings/102361","event_url":"https://api.media.ccc.de/public/events/392b999d-a703-5c7e-a4fb-3603807672dd","conference_url":"https://api.media.ccc.de/public/conferences/emf2026"},{"length":1271,"mime_type":"video/webm","language":"eng","filename":"emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_webm-hd.webm","state":"new","folder":"webm-hd","high_quality":true,"width":1920,"height":1080,"updated_at":"2026-07-17T17:17:33.894+02:00","label":"eng 1080p","size":135,"recording_url":"https://cdn.media.ccc.de/events/emf/2026/webm-hd/emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_webm-hd.webm","url":"https://api.media.ccc.de/public/recordings/102362","event_url":"https://api.media.ccc.de/public/events/392b999d-a703-5c7e-a4fb-3603807672dd","conference_url":"https://api.media.ccc.de/public/conferences/emf2026"},{"length":1271,"mime_type":"video/webm","language":"eng","filename":"emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_webm-sd.webm","state":"new","folder":"webm-sd","high_quality":false,"width":720,"height":576,"updated_at":"2026-07-17T17:21:03.798+02:00","label":"eng 576p","size":48,"recording_url":"https://cdn.media.ccc.de/events/emf/2026/webm-sd/emf2026-14701-eng-Rotundest_Robin_Building_a_Smart_Bird_Feeder_That_Weighs_Songbirds_webm-sd.webm","url":"https://api.media.ccc.de/public/recordings/102366","event_url":"https://api.media.ccc.de/public/events/392b999d-a703-5c7e-a4fb-3603807672dd","conference_url":"https://api.media.ccc.de/public/conferences/emf2026"}]}