Whoo hooo! I'm the first to write a tip on encountering!
It's only found during heat waves on scorched, probably just spawns anytime on modded maps in a few days.

The Phoenix eats sulfur only sulfur and nothing but sulfur so just keeput that in mind after you tame one.

It usually spawns near the red obolisk or the sand dunes or the Rocky mountains behind the red obolisk. 80% of the times it's their 15% of the time it's near the silicon pearl loop in the middle of the map 5% of the time near the corners of the map. Happy hunting.

Can use fire wyvren insted of arrows.

OK so you go into a heat wave and go searching for it and tame it using
non-passive passive taming... BURN IT UNTILL YOU TAME IT!!!!!!!!!! its Passive taming but not all that passive... yeah... good luck with that Moltres...

Use all your stuff tamed with a......FRICKEN FLAME THROWER yes flamethrowers little fire and it's your best buddy

Only one wild Phoenix will spawn at a time per map.

Follow it then let it dissipear waiting for the next heat wave. Then trap the ashes/where it temporarily died, and start flaming it with flame arrows, a fire wyvern, or torches.

After heat wave is over where the Phoenix went into ashes next it heat wave it’ll spawn there! -TBFlame

Use s+ tek transmiter. Use dino scan in this item.
U see 3 phoenixes on each map.

Only 1 phoenix per map is wrong.

Ha. Good luck finding it. Nearly impossible

You can also spawn it by setting it’s ashes on fire.