The second link in the article goes to https://www.raspberrypi.com/news/classify-birds-acoustically-with-birdnet-pi/ https://www.raspberrypi.com/news/classify-b

The second link in the article goes to https://www.raspberrypi.com/news/classify-birds-acoustically-with-birdnet-pi/ https://www.raspberrypi.com/news/classify-birds-acoustically... which says "It uses a USB sound card to pick up bird sounds, and classifies them locally using a pre-trained machine learning model." But the next link https://sarsef.org/wp-content/uploads/2023/02/Finnegans-Project-2022.pdf https://sarsef.org/wp-content/uploads/2023/02/Finnegans-Proj... says "The computer is programmed to listen to ambient sounds, record bird songs, show audio curves, and send all data to BirdNET at the Cornell Lab of Ornithology for analysis in order to determine what kind of bird is present in a specific location".