Guide for killing fish with ichthyornis on UME (or any other platform):

1. Turn on hunt or hunt and retrieve (in creature settings)

2. Carry the ichthyornis on your shoulder (target it and tap)

3. Target a fish (make sure the fish is in the middle of the screen)

4. Release the ichthyornis by holding the right side of your screen

5. The ichthyornis will target and kill the fish, and bring the fish back to you if you selected hunt and retrieve, or drop it if you picked hunt instead.

6. The fish will have a slight golden glow around it, indicating that it has been killed by an ichthyornis, and will drop prime fish meat, and give 5x more taming affinity when fed to a hesperornis.