How to identify the Red Phalarope

To correctly identify the Red Phalarope (Phalaropus fulicarius), check each of these features. Birds can be tricky: habit, habitat, and call often confirm a sighting that a single photo cannot.

Size at a glance

Length

19-23 cm (7.5-9.1 in)

Wingspan

37-42 cm (14.6-16.5 in)

Weight

40-80 g (1.4-2.8 oz)

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   Breeding females are brick-red on the underparts, with a dark brown back streaked with buff, a white cheek patch, and a dark cap. Breeding males are duller, with paler rufous underparts. Non-breeding birds (both sexes) are predominantly grey above and white below, with a dark eye patch and a dark patch on the hindcrown/nape. Juveniles resemble non-breeding adults but have a browner back with buffy fringes.

2. 2

   Beak shape

   Shape and color of the bill: a key field mark.

   Relatively short, straight, and stout bill, yellow at the base with a black tip in breeding plumage, mostly black in non-breeding plumage.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Dark brown

4. 4

   Leg color

   Leg and foot color.

   Dark grey to blackish in non-breeding plumage; yellowish-orange to reddish-orange in breeding plumage, often with dark webbing.

5. 5

   Distinguishing features

   Standout features that separate this species.

   Unique feeding behavior (spinning in water), lobed toes, reversed sexual dimorphism, and distinct breeding and non-breeding plumages. In breeding plumage, the extensive brick-red underparts are diagnostic. In non-breeding plumage, the stout bill and dark eye patch contrasting with a white head are key.

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles resemble non-breeding adults but have a browner back with buffy feather fringes, giving a scaled appearance. The dark eye patch is present, and the bill is dark.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   Dramatic seasonal changes. Breeding plumage (late spring to early autumn) features extensive brick-red underparts, dark cap, and white cheek patch. Non-breeding plumage (autumn to spring) is largely grey above and white below, with a prominent dark eye patch and a dark patch on the hindcrown/nape. The bill also changes from yellow-based to all dark.

8. 8

   Sexual dimorphism

   How males and females differ.

   Reversed sexual dimorphism: breeding females are larger and more brightly colored than breeding males. Females have richer brick-red underparts, a more defined white cheek patch, and a darker cap. Males are duller overall.

Key field marks

• Size and Shape. Small, plump shorebird with a relatively short neck and a stout bill. Lobed toes are a key phalarope characteristic, though often not visible in the field.
• Breeding Plumage (Female). Look for extensive brick-red underparts, a dark cap, and a prominent white cheek patch. The back is dark brown with buffy streaks. Bill is yellow with a black tip.
• Breeding Plumage (Male). Similar to female but duller, with paler rufous underparts and less contrasting head markings.
• Non-breeding Plumage (Both Sexes). Predominantly grey above and white below. Key features are the prominent dark eye patch and a dark patch on the hindcrown/nape. The bill is entirely dark.
• Juvenile Plumage. Resembles non-breeding adults but has a browner back with buffy feather fringes, giving a scaly appearance.
• Feeding Behavior. Observe its unique spinning behavior on the water surface to stir up prey. This is a strong indicator for any phalarope species.
• Bill Shape. The relatively stout, straight bill (compared to the needle-like bill of Wilson's or the finer bill of Red-necked) is a good distinguishing feature, especially in non-breeding plumage.

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