Hesperornis Egg

Eggs from the Hesperornis

The Hesperornis drops these eggs at random in ARK: Survival Evolved and ARK: Survival Ascended. A survivor can eat one, and the game credits it with food value: "Tremendously nourishing by itself, this egg provides simple nutritional value in many cooking recipes." Be careful around wild Hesperornis, though: grabbing an egg while they are near makes them hostile, and they attack.

Cooking eggs into Oil

The ARK Wiki points to a quick source of Oil: cooking the eggs in a Cooking Pot makes 12 Oil, although this does not seem to work in Primitive Plus. Our recipe data agrees that the egg is an ingredient of Oil in both games, and the ASE data adds a second recipe, Squid Oil, that also takes one egg. Kibble is not an option; the wiki says Simple Kibble from these eggs needs a mod such as Structures Plus or Super Structures.

Hatching and incubation

When two Hesperornis mate, the egg they produce can hatch into a baby. The wiki gives a hatching time of 1h 30m 54.109s at a temperature between 22 and 30 °C (72 to 86 °F); outside that range the egg starts losing health. In an Egg Incubator kept at the ideal temperature, the time can drop by up to 20%. A female then needs 18h to 2d before she is able to lay again.

Weight, stacking and spoiling

One egg weighs 3 and they stack to 100, so a full stack weighs 300. An egg spoils after 8 days (192 hours). Our records place it on 14 maps, among them The Island, Scorched Earth, Extinction and Lost Island, and the wiki dates it to patch 258.0. The wiki also mentions Golden Hesperornis Eggs, which the Hesperornis lays as well and which have uses of their own.