Birb's Theodolite

The mod is based on the Talbot's Theodolite solver used on Hypixel Skyblock. Once the player reads the values the Theodolite gives, the mod draws a red circle for the area, with a green circle marking the center and a margin ring for error. Because the Theodolite rounds values to multiples of 5, the area can be much larger than the exact spot, and the mod lets players counteract this by setting the angle height margins to 2.5 to narrow the highlight.

The highlighted circles are removed when the animal is killed or the player leaves the lobby or server. Settings are kept in a JSON file inside the standard Minecraft config folder. A config menu and a fancy shapes option change how the circles are drawn. The mod is a client-side mod, so only the player needs it; the server does not. Installing it requires Fabric, and it is published only for Fabric, across five release versions, 1.21.5 – 26.1.2, under the Creative Commons Attribution Non Commercial Share Alike 4.0 license. Its source code is public, but the license is not open source. The latest Fabric file is 1.0.6 for 26.1.2.