Mammal field guide · Bovids

Photographing the Bighorn Sheep

How to photograph the Bighorn Sheep (Ovis canadensis): the right lens for its size, shutter speeds for perched and moving animals, and when it's most often seen (May, June, July and August).

120–330 cm1/1600–1/2000 s
120–330 cm
Typical length (family range)
1/500 s
Shutter: perched / still
1/1600–1/2000 s
Shutter: action / flight
f/5.6–f/8
Aperture
31,392
Research-grade sightings in N. America
ModeManual + Auto ISOLock shutter & aperture, let ISO float
Shutter (still)1/500 s
Shutter (action)1/1600–1/2000 s
Aperturef/5.6–f/8
FocusAF-C + subject/eye detectionUse animal-eye AF; for herds stop down a little so several animals are sharp.
DriveHigh-speed burst
Lens100–400 mmFull-frame equivalent

Focal length needed to frame it#

For a subject about 225 cm long filling a third or half of the frame width horizontally.

Distance⅓ of frame (FF)½ of frame (FF)⅓ of frame (APS-C)⅓ of frame (MFT)
5 m (16 ft)26 mm40 mm18 mm13 mm
10 m (33 ft)53 mm79 mm35 mm26 mm
15 m (49 ft)79 mm119 mm53 mm39 mm
20 m (66 ft)105 mm159 mm70 mm53 mm
30 m (98 ft)158 mm238 mm105 mm79 mm
50 m (164 ft)263 mm397 mm175 mm131 mm

When to find it#

Jan: 5% Jan Feb: 5% Feb Mar: 7% Mar Apr: 8% Apr May: 11% May Jun: 12% Jun Jul: 14% Jul Aug: 12% Aug Sep: 9% Sep Oct: 6% Oct Nov: 6% Nov Dec: 5% Dec
Share of iNaturalist observations by month across North America. Peak months: May, June, July and August.

About the Bighorn Sheep#

The bighorn sheep (Ovis canadensis) is a species of sheep native to North America named for its large horns. These horns can weigh up to 14 kg (30 lb), while the sheep themselves weigh up to 140 kg (300 lb). Recent genetic testing indicates three distinct subspecies of Ovis canadensis, one of which is endangered: O. c. sierrae.

Summary adapted from Wikipedia via iNaturalist (CC BY-SA 4.0).

Field-craft tips#

  • Bison: stay 25 m away (National Park rule).
  • Bighorn sheep are often on cliffs — expose for the bright rock.
  • Use animal-eye AF; for herds stop down a little so several animals are sharp.
  • Sightings peak in May, June, July and August, which is when you'll have the most chances.

Ethics#

  • The welfare of the animal comes first: if it changes its behaviour because of you, you are too close.
  • Stay on trails, respect closures around nests, leks, dens and haul-outs.
  • Avoid playback and baiting in sensitive seasons; never bait predators.
  • Don't share precise locations of rare, nesting or roosting animals publicly.

More Bovids#

American Bison American BisonBos bison Mountain Goat Mountain GoatOreamnos americanus

Frequently asked questions#

What lens do I need to photograph a Bighorn Sheep?

At about 225 cm long, a bighorn sheep fills a third of a full-frame image at 10 m with roughly 53 mm, or at 20 m with 105 mm.

What shutter speed should I use for a Bighorn Sheep?

1/500 s when it's still; 1/1600–1/2000 s for action.

When is the best time to photograph a Bighorn Sheep?

Observations in North America peak in May, June, July and August. Early morning and late afternoon give the best light and activity.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources