Ignoring the Curl option for one moment... I didn't get two feeds of the same name created when running the newer group example, although it looks initially like that on the website, but instead it gets associated to two groups. Check the feed test, you should see it is one feed with two entries in the groups collection. If you alter the new group demo to re-fetch the humidity group where it re-fetches the latest group data, and print it, you should see the feed has two groups associated (the original - default in this case - and envvars or whatever was passed to add_feed_to_group). You could add a pause, or comment out the deletion code, then inspect the website and fetch the feed data freshly again then print the objects/json.