Bird field guide · New World Warblers

Photographing the Bay-breasted Warbler

How to photograph the Bay-breasted Warbler (Setophaga castanea): the right lens for its size, shutter speeds for perched and moving animals, and when it's most often seen (May and September).

11–15 cm1/3200–1/4000 s
Bay-breasted Warbler (Setophaga castanea)
Photo: © Owen Strickland, some rights reserved (CC BY), uploaded by Owen Strickland via iNaturalist
11–15 cm
Typical length (family range)
1/1000 s
Shutter: perched / still
1/3200–1/4000 s
Shutter: action / flight
f/5.6–f/8
Aperture
16,703
Research-grade sightings in N. America
ModeManual + Auto ISOLock shutter & aperture, let ISO float
Shutter (still)1/1000 s
Shutter (action)1/3200–1/4000 s
Aperturef/5.6–f/8
FocusAF-C + subject/eye detectionUse a small flexible zone or animal-eye AF; tiny birds flit constantly, so shoot short bursts.
DriveHigh-speed burst
Lens400–600 mmFull-frame equivalent

Focal length needed to frame it#

For a subject about 13 cm long filling a third or half of the frame width horizontally. Small birds demand long lenses and a close approach — a blind or feeder setup helps.

Distance⅓ of frame (FF)½ of frame (FF)⅓ of frame (APS-C)⅓ of frame (MFT)
5 m (16 ft)419 mm608 mm279 mm209 mm
10 m (33 ft)837 mm1,216 mm558 mm419 mm
15 m (49 ft)1,256 mm1,824 mm837 mm628 mm
20 m (66 ft)1,675 mm2,432 mm1,116 mm837 mm
30 m (98 ft)2,512 mm3,649 mm1,675 mm1,256 mm
50 m (164 ft)4,187 mm6,081 mm2,791 mm2,093 mm

When to find it#

Jan: 1% Jan Feb: 1% Feb Mar: 1% Mar Apr: 4% Apr May: 39% May Jun: 2% Jun Jul: 1% Jul Aug: 11% Aug Sep: 30% Sep Oct: 9% Oct Nov: 2% Nov Dec: 1% Dec
Share of iNaturalist observations by month across North America. Peak months: May and September.

About the Bay-breasted Warbler#

The bay-breasted warbler (Setophaga castanea) is a New World warbler. It breeds in northern North America, specifically in Canada, into the Great Lakes region, and into northern New England.

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

Field-craft tips#

  • Spring migration (late April–May) is peak season.
  • Learn songs to locate birds before you see them.
  • Shoot at the canopy edge where light reaches the leaves.
  • Use a small flexible zone or animal-eye AF; tiny birds flit constantly, so shoot short bursts.
  • Sightings peak in May and September, which is when you'll have the most chances.
  • Tiny subjects: get close with a hide or feeder perch rather than cropping heavily.

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 New World Warblers#

Yellow-rumped Warbler Yellow-rumped WarblerSetophaga coronata Northern Yellow Warbler Northern Yellow WarblerSetophaga aestiva Common Yellowthroat Common YellowthroatGeothlypis trichas Palm Warbler Palm WarblerSetophaga palmarum Orange-crowned WarblerLeiothlypis celata American Redstart American RedstartSetophaga ruticilla Black-and-white Warbler Black-and-white WarblerMniotilta varia Wilson's Warbler Wilson's WarblerCardellina pusilla

Frequently asked questions#

What lens do I need to photograph a Bay-breasted Warbler?

At about 13 cm long, a bay-breasted warbler fills a third of a full-frame image at 10 m with roughly 837 mm, or at 20 m with 1,675 mm.

What shutter speed should I use for a Bay-breasted Warbler?

1/1000 s when it's still; 1/3200–1/4000 s for action.

When is the best time to photograph a Bay-breasted Warbler?

Observations in North America peak in May and September. Early morning and late afternoon give the best light and activity.

Sources & licences#

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