How to identify the Red Siskin

To correctly identify the Red Siskin (Spinus cucullatus), 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

10-11.5 cm

Wingspan

18-20 cm

Weight

9.5-13 g

Physical features to check

1. 1

   Plumage

   Overall feather coloration and pattern.

   Adult male: Vivid scarlet red body with a black head (hood), black wings with a prominent red patch on the coverts, and a black tail. Adult female: Dull reddish-orange to brownish-red overall, with a greyish head and upperparts, and a paler, more yellowish-orange underside. Wings and tail are dusky with faint reddish wash, lacking the distinct black and red pattern of the male.

2. 2

   Beak shape

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

   Small, conical, and pointed, adapted for cracking seeds. Color is typically horn-colored to greyish.

3. 3

   Eye color

   Iris color and any distinctive eye markings.

   Dark brown.

4. 4

   Leg color

   Leg and foot color.

   Dusky grey to blackish.

5. 5

   Distinguishing features

   Standout features that separate this species.

   The male's striking combination of brilliant red and black is unmistakable. The female's duller reddish-orange plumage with a greyish head is also distinctive among siskins.

6. 6

   Juvenile appearance

   How young birds differ from adults.

   Juveniles resemble females but are even duller, with more streaking on the underparts and a more brownish-grey overall coloration. Young males gradually acquire red feathers as they mature.

7. 7

   Seasonal changes

   Plumage variation between breeding and non-breeding seasons.

   No significant seasonal plumage changes. Plumage remains consistent throughout the year, though feather wear can make colors appear slightly duller over time.

8. 8

   Sexual dimorphism

   How males and females differ.

   Highly sexually dimorphic. Males are bright red and black; females are duller reddish-orange/brownish-red with greyish heads.

Key field marks

• Male Plumage. Look for the unmistakable combination of brilliant scarlet red body and a contrasting black hood (head), black wings with a red patch, and a black tail. No other siskin in its range has this pattern.
• Female Plumage. Identify females by their duller reddish-orange to brownish-red overall coloration, greyish head, and paler, more yellowish-orange underparts. They lack the distinct black and red patterns of the male.
• Size and Shape. Small finch, compact body, and a conical bill. Typical siskin shape.
• Vocalizations. Listen for the complex, varied, and melodious song, often with mimicry. Calls include sharp 'tsee-tsee' and buzzing 'zzzzzt' sounds.
• Behavior. Observe their foraging behavior, often hanging upside down to extract seeds from plants. They move in small, active flocks.

Explore the Red Siskin