Can't find lost mount

I was taming a Pteranodon and already had a Pelagornis. When the Pteranodon was tamed I realized it was on 'attack my target' (as they are when first tamed) so I changed it to passive. Then I realized that my Pelagornis was also on neutral. I don't like having flyers on neutral because when they get attacked they go absolutely mental. I was in the menu when i tried to click 'change aggression level to:Passive' when I slipped and must of clicked 'enable wandering' because he kicked me out of the menu and the Pelagornis flew off into the sky. I tried to press U and J to get him to come back but he was already out of range. I could have followed but I didn't have the Pteranodon saddle ready so I had to go and gather resources. I have flown across the entire: south, north and west of the map looking for him.

Basically I was just wondering if there is a command to locate him, or teleport him to me. And it is on a singleplayer so I don't have to worry about it being an official and not letting me. Please help!!!

In-game, there's no method to find a lost dinosaur, unless you've already placed a tracking node on the dinosaur (assuming it has not been removed.)

If mods are an option, the one I've used, for years is: Joan's Pet Finder It will basically show a line pointing in the direction of your pets (except those close to you) to help you find them.

Related, you can also use her Death Helper, which works along the same premise, to find your corpse when you die.