First, you have to buy the skill “Serpent’s Glint” (Green Skill). This will unlock the Flare Round Attachment for your pistol. Then head to the “Mission of San Juan” Base Camp “Ruined Tower“.
There you will find 4 turkeys, they walk around the base camp. If they are not there, walk around a bit, investigate the area near the ruined tower. Sometimes they also sit in the bushes and only walk away when they are nearby.
If you see a turkey, now shoot them with pistol’s flare round (R1).
That's all, quite easy! Are you looking for more solutions or trophies tutorials on the new Lara adventure? Check it out in our Tomb Raider Walkthrough.