15–50 cm
Typical length (family range)
1/800 s
Shutter: perched / still
1/2500 s
Shutter: action / flight
f/5.6–f/8
Aperture
65,630
Research-grade sightings in N. America
Recommended camera settings#
ModeManual + Auto ISOLock shutter & aperture, let ISO float
Shutter (still)1/800 s
Shutter (action)1/2500 s
Aperturef/5.6–f/8
FocusAF-C + subject/eye detectionTrunk-clinging birds sit in shade: watch your shutter speed and use zone AF to avoid focusing on bark.
DriveHigh-speed burst
Lens300–500 mmFull-frame equivalent
Focal length needed to frame it#
For a subject about 32 cm long filling a third or half of the frame width horizontally.
| Distance | ⅓ of frame (FF) | ½ of frame (FF) | ⅓ of frame (APS-C) | ⅓ of frame (MFT) |
|---|---|---|---|---|
| 5 m (16 ft) | 176 mm | 262 mm | 118 mm | 88 mm |
| 10 m (33 ft) | 353 mm | 525 mm | 235 mm | 176 mm |
| 15 m (49 ft) | 529 mm | 787 mm | 353 mm | 264 mm |
| 20 m (66 ft) | 705 mm | 1,050 mm | 470 mm | 353 mm |
| 30 m (98 ft) | 1,058 mm | 1,574 mm | 705 mm | 529 mm |
| 50 m (164 ft) | 1,763 mm | 2,624 mm | 1,175 mm | 882 mm |
About the Acorn Woodpecker#
The acorn woodpecker (Melanerpes formicivorus) is a medium-sized woodpecker, 21 cm (8.3 in) long, with an average weight of 85 g (3.0 oz).
Summary adapted from Wikipedia via iNaturalist (CC BY-SA 4.0).
Field-craft tips#
- Dead snags are favourite drumming posts.
- Expose for the bright head patches; forests are dim, so raise ISO before dropping shutter speed.
- Trunk-clinging birds sit in shade: watch your shutter speed and use zone AF to avoid focusing on bark.
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 Woodpeckers#
Downy WoodpeckerDryobates pubescens
Northern FlickerColaptes auratus
Red-bellied WoodpeckerMelanerpes carolinus
Pileated WoodpeckerDryocopus pileatus
Hairy WoodpeckerLeuconotopicus villosus
Yellow-bellied SapsuckerSphyrapicus varius
Golden-fronted WoodpeckerMelanerpes aurifrons
Red-headed WoodpeckerMelanerpes erythrocephalus
Frequently asked questions#
What lens do I need to photograph an Acorn Woodpecker?
At about 32 cm long, an acorn woodpecker fills a third of a full-frame image at 10 m with roughly 353 mm, or at 20 m with 705 mm.
What shutter speed should I use for an Acorn Woodpecker?
1/800 s when it's still; 1/2500 s for action.
When is the best time to photograph a Acorn Woodpecker?
Observations in North America peak in March, April, May, June, July, August and September. Early morning and late afternoon give the best light and activity.
Sources & licences#
- iNaturalist — Observation data CC BY-NC; photo licence as credited
- Wikipedia — CC BY-SA 4.0
Last updated October 03, 2026 · How we calculate · Sources