Red-breasted Merganser
Mergus serrator · Lifer #204
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Photos: 5 Forms: 2 (F, M/Breeding)
US-VAUS-WI
Monotypic. Plumage varies, breeding (fall-early summer) is typical for males but in non-breeding look more like female. M/F differ, with typical merganser patterning of green head for males and brownish throughout for female.
Red-breasted Merganser
★★★★★ · 2026-04-21 · US-WI · 3227×2151 (2767×1929) · ISO 3200 · Canon EOS R8
Floating · Eye · 1F
Red-breasted Merganser
★★★★☆ · 2026-04-21 · US-WI · 2951×1660 (2593×1169) · ISO 2500 · Canon EOS R8
Floating · Eye · 1F
Red-breasted Merganser
★★★★☆ · 2026-04-21 · US-WI · 3032×2021 (2687×1113) · ISO 2000 · Canon EOS R8
Floating · Eye · 1F
Red-breasted Merganser
★★★★★ · 2026-04-21 · US-WI · 2974×1983 (2319×1702) · ISO 2500 · Canon EOS R8
Floating · Eye · 1F
Red-breasted Merganser
★★★★☆ · 2026-04-21 · US-WI · 1407×1407 (1245×762) · ISO 1250 · Canon EOS R8
Floating · 1M · Breeding