https://www.pcgamer.com/you-know-you-want-this-mod-that-lets-you-ride-giant-ducks-and-chickens-in-skyrim/

Breaking news! The moment you've been waiting for since 2011, when Skyrim was first released, is finally here, and even if you didn't know you were waiting for that moment I think deep down you probably were. Thanks to the Ducks and Co. Mounts and Followers mod, you can now ride enormous ducks, chickens, pheasants, pigeons, and other large birds around in Skyrim.

As far as I can tell the giant birds don't actually fly, as all of the mod's images simply show them on foot. But I think there's something almost more appealing about riding a giant duck around in Skyrim when it doesn't take flight and flap around. Just strolling through Riften or Solitude on the back of giant duck, you know?