Birds in the cloud

I had never heard about birdwatching until the last day when I stumbled upon the Cornell Lab of Ornithology's eBird project. It provides a dataset of bird observations worldwide, with 1.5 billion records updated monthly. I immediately loaded this dataset into my visualization tool. The adsb.exposed website already contains a dataset of air traffic with over 130 billion records and a dataset of Foursquare places. There is certainly a larger number of birds than airplanes, but the dataset of bird.