Alpine Ibex

Capra ibex

Also known as: Ibex

LCLeast Concern

Alpine ibex are heavy mountain goats shaped for steep European rock, with backward-curving horns and split hooves that grip narrow ledges. They aren't a native United States mammal, and the national occurrence pull found no confirmed recent American records for this taxon. Its appearance on a New Mexico roster may reflect a captive, escaped, or misidentified animal rather than an established wild population.

US Range

IUCN Red List status

  1. LC
  2. NT
  3. VU
  4. EN
  5. CR
  6. EW
  7. EX

LC – Least Concern

Widespread and abundant; not at risk.

SizeAlpine Ibex beside a 1.8 m adult, drawn to scale
Created by potrace 1.16, written by Peter Selinger 2001-2019 Created by potrace 1.16, written by Peter Selinger 2001-2019
Body length
1.49–1.71 m4 ft 11 in–5 ft 7 in
Weight
67–117 kg148–258 lb

Silhouettes drawn to scale against a 1.8 m5 ft 11 in adult.

Sounds & calls

Hear the Alpine Ibex: 1 field recording. Press play to listen.

Trophic relationshipsFood web What a Alpine Ibex eats, and what eats it.
Eaten by6
Gray WolfCanis lupusGolden EagleAquila chrysaetosWhite-tailed EagleHaliaeetus albicillaRed FoxVulpes vulpesUrsus arctosUrsus arctosSnow LeopardPanthera uncia
This speciesAlpine Ibex
Myrtle-leaved WillowSalix myrtilloidesRhodes GrassChloris gayanaBermuda GrassCynodon dactylonTeffEragrostis tefAfrican Love GrassEragrostis curvulaDigitgrassDigitaria erianthaPara GrassBrachiaria muticaWest Indian Marsh GrassHymenachne amplexicaulis
Eats8

A sample of documented feeding relationships, filtered to species that also occur in the US. Diet and predators vary by region and season, and this is not a complete list, many animals eat, and are eaten by, more than what has been formally recorded here.

Life history

The Alpine Ibex (67–117 kg147.7–257.9 lb) is a herbivore that first breeds around 2.2 years, carries a 169-day gestation, and bears about 1.2 young per litter. Maximum recorded longevity is 21 years.

Life cycle

  1. Gestation169 days (≈5.6 months)
  2. Birthlitter of 1.2 young
  3. Sexual maturity2.2 yr (female) · 3.4 yr (male)
  4. Typical lifespan21 years
  5. Maximum recorded longevity21 years

Reproduction

Gestation
169days≈5.6 months
Litter size
1.2youngaverage
Litters / year
0.8littersabout one every 1.3 years
Age at first breeding
2.2years♀ 2.2 · ♂ 3.4 yr

Diet composition

Herbivore

By foraging composition: 100% plant material.

  • Plant material100%

Most active during the day and at dawn and dusk.

Typical values for the species, not local measurements. Maximum longevity is the longest lifespan on record; most individuals live far less.

Commonly confused with

Animals people sometimes mistake for the alpine ibex, and how to tell them apart.

An Alpine specialist, not an American native

The Alpine ibex belongs to the high mountains of Europe. Wild populations live around the Alps, where cliffs, rocky slopes, open grass, and nearby woodland provide seasonal habitat. It has no established native range in the United States.

The lack of confirmed recent United States records deserves more weight than a single state-list appearance. Captive animals, escapees, and photographs assigned to the wrong goat can all enter community-science systems. Any report from the state would need careful review before it supported a claim of a free-ranging population.

This uncertainty doesn’t make the animal itself mysterious. Alpine ibex are well studied in Europe, but applying their European natural history to a supposed American population would be misleading. Records document reports, not establishment or abundance.

The horns reveal age and sex

Males carry exceptionally long, thick horns marked by prominent ridges. The horns sweep backward rather than curling tightly beside the head. Females also have horns, but theirs are shorter and slimmer. Both sexes have a sturdy body, short tail, and brown coat that becomes thicker and duller in winter.

Several wild and domestic goats can look similar at a distance. Horn shape, body proportions, location, and the animal’s circumstances all matter. A photograph from a ranch or fenced mountain exhibit shouldn’t be treated as evidence of a wild American range.

Ibex hooves combine a hard outer edge with a softer gripping pad. Their widely spreading toes help them balance on small shelves and broken stone. Powerful shoulders and compact legs support short climbs that would stop many larger hoofed mammals.

Following food up and down the mountain

Alpine ibex eat grasses, herbs, leaves, and woody growth. Seasonal snow pushes them lower in winter, while new plant growth draws them upward through spring and summer. They often feed in open areas and retreat toward steep ground when disturbed.

Males and females commonly form separate groups outside the mating season. Older males may travel in loose bands, while females stay with young. The groups come together during the winter breeding period, when males compete through displays and clashes.

Wolves can hunt adults, and eagles may threaten very young kids. Cliffs provide escape terrain but bring their own costs. Falls, severe weather, and winter food shortages can be as important as direct predation in high mountains.

From near loss to Alpine recovery

Centuries of hunting reduced Alpine ibex to a small surviving group around Italy’s Gran Paradiso region. Protection and reintroductions later restored the species across much of the Alps. That recovery is one of Europe’s best-known large-mammal conservation stories.

The IUCN now lists the Alpine ibex as Least Concern, but local herds remain separated by valleys, roads, and development. Low genetic diversity in some restored populations reflects their narrow escape from extinction. Disease exchanged with domestic goats is another continuing concern.

None of that establishes the species in New Mexico. Until a verifiable wild population is documented, the most accurate United States account is cautious: an Alpine animal may occasionally appear in captivity or after escape, but the available national records don’t show a settled American range.

Data & sources

The data and visualizations on this page draw on these open sources: