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Hesperornis

CreatureMisc

  • Aquatic
  • Piscivore
  • Tamable
  • Breedable
  • Passive tame
Hesperornis

Breeding calculator

Hesperornis

Official servers currently have boosted rates! You don't need to change settings in our calculator.

SettingsHatch 2× · Mature 2× · Food 1× · Weight 70

Baby: The hatched dinosaur, now a baby, needs constant attention and food placed directly in its inventory to survive, or a nearby Maewing to take care of its needs.

Incubation
45m 27s
Maturation
14h 1m 45s
Incubation temperature
22 - 30 °C
Food at birth
42.5/min

Maturation Progress

5%
Status:
Baby
Time Left:
13:19:39
Total Time:
14:01:45

Maturation

Incubation Time
45m 27s
Elapsed Time
42m 6s
Maturation Time Left
13h 19m 39s
Time to Juvenile
42m 5s

Food

Total Food Items
716items
Food to Adult
467items
Food Per Hour
98
Food Capacity
35items
Baby Hand Feed For
14m 27s6.7% maturation

Imprinting

Cuddle interval
4h 48m
Imprint per cuddle
74.8%
Maximum imprint
100.0% (2 cuddles)
Settings8 h · interval ×0.6 · amount ×2

Raising food

Food per item
25
Stack size
40
Eats at 5%
40.38 food/min
Maturation
14h 1m 45s
StageTime remainingFood pointsRaw Fish MeatStacksWeight
BabyNeed this much for 5% to 10%42m 5s1,6556726.7
JuvenileNeed this much for 10% to 50%5h 36m 42s10,0184011140.1
AdolescentNeed this much for 50% to 100%7h 0m 52s4,472179517.9
Total13h 19m 39s6471864.7

Total: 647 Raw Fish Meat

Feeding Trough
2,400 items (60 slots)Fits in one load
Tek Trough
4,000 items (100 slots)Fits in one load
Maewing / Maeguana
300 slots50% weight reduction on meat & berries
  • Juvenile - 5x trough refills needed (food spoils before phase ends)
  • Adolescent - 6x trough refills needed (food spoils before phase ends)

Spoils in 20m | Trough / Maewing: 1h 20m | Tek Trough: 1d 9h

During the Baby phase (0-10%), you must hand-feed or use a Maewing to nurse. From Juvenile (10%+), dinos can eat from a Feeding Trough on their own. Use Preserving Salt in troughs to double spoil times.

More about breeding the Hesperornis

The Hesperornis reproduces by laying fertilized eggs after mating. Incubation temperature must stay between 22°C and 30°C - use Air Conditioners, Standing Torches, or Dimetrodons to maintain the range. At the correct temperature, the egg hatches in approximately 1 hour and 30 minutes.

Full maturation from baby to adult takes ~1 day and 4 hours (1x rate), progressing over a lengthy period. During the baby phase (0–10%), hand-feed it directly. From 10% onward (juvenile), it can eat from a Feeding Trough.

Offspring inherit parental stats and have a small chance to mutate, gaining +2 levels in a random stat. Use the breeding calculator to plan food requirements, incubation timers, and maturation phases.

Raising a baby Hesperornis involves three maturation phases: Baby (0–10%) lasts ~168 min and requires constant hand-feeding. Juvenile (10–50%) spans ~11h - it can eat from a Trough now. Adolescent (50–100%) takes ~14h - continues eating from troughs, nearly fully grown.

Imprinting during maturation provides permanent stat bonuses. At 100% imprint, the Hesperornis gains 30% bonus damage and resistance when ridden by the imprinter. You'll be asked to cuddle, walk, or feed specific kibble at regular intervals during maturation.

The raising calculator above shows exactly how much food you need for each maturation phase of the Hesperornis. Budget ~168 minutes for the Baby phase - this is when hand-feeding or Maewing nursing is mandatory.

Raising multiple Hesperornis simultaneously? Set the dino count and the calculator scales food requirements automatically. Different food types have different spoil timers - factor that into which food you stockpile.

The Hesperornis is a tamable, aquatic, piscivore creature in ARK: Survival Ascended. Classified under the Misc group.

Melee starts at 100% - solid damage output that scales with level-ups. Health-wise, the Hesperornis sits at 95 base, making it very frail. With 200 base Stamina, the Hesperornis has decent staying power. A base Weight of 70 means not built for hauling.

As a tame, the Hesperornis is well-suited for deep-sea exploration, cave diving, and ocean resource runs. Breeding produces fertilized eggs that hatch within a 22°C–30°C temperature window. Defeating one in the wild grants 0.5 base XP. It can be cloned at a Cloning Chamber for 0.25 Element plus 0.01 Element per level.

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