Bird Identifier
Eurasian Siskin (Spinus spinus)
songbird

Eurasian Siskin

Spinus spinus

A small, active yellow-green finch of conifer forests; the male has a black cap and bib, both sexes showing bright yellow wing bars.

Size
11-12.5 cm (4.3-5 in) long, 20-23 cm wingspan
Habitat
coniferous and mixed woodlands, alder and birch stands
Type
songbird

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Overview

The Eurasian Siskin is a small, lively finch with a slender, pointed bill well suited to extracting seeds from conifer cones and alder catkins. The male is streaked yellow-green with a black crown and small black chin patch, bright yellow wing bars, and yellow-green edges to the tail. The female is duller and more heavily streaked, lacking the black cap.

Highly acrobatic, Siskins often feed hanging upside down from cone clusters or catkins, and they form active, twittering flocks that move nomadically in search of good seed crops, sometimes irrupting into new areas in years of food shortage further north.

How to identify it

Key field marks

  • Male: black crown and small black bib, yellow-green streaked body, bright yellow wing bars
  • Female: duller, more heavily streaked, no black cap
  • Slender, pointed bill
  • Bright yellow patches at the base of the tail

Similar species

  • European Greenfinch is larger, stockier, and less streaked, with a heavier bill.
  • European Goldfinch has a red face and lacks the Siskin's black cap and streaking.

Habitat & range

Habitat

Favors coniferous and mixed woodland, especially spruce and pine, as well as alder and birch stands along rivers in winter.

Range

Widespread across Europe and temperate Asia.

Migration

Partially migratory and notably nomadic/irruptive, with numbers in a given area varying greatly year to year depending on seed crop availability; many move south or make local movements in winter.

Behavior & voice

Behavior

Highly acrobatic, often hanging upside down from cones or catkins to extract seeds; forms active, twittering flocks outside the breeding season and is an increasingly common garden feeder visitor in some winters.

Voice

A lively, twittering, wheezy song mixed with trilling notes; distinctive flight call is a thin, rising "tsy-zi."

Feeding

Specializes on conifer seeds and alder or birch catkins, extracted with its fine pointed bill, supplemented by insects in the breeding season; visits feeders for nyjer and sunflower hearts.

Nesting

Builds a small, neat cup nest of twigs, moss, and lichen, typically high in a conifer; lays 3-5 pale blue-green eggs with fine reddish speckling.

Frequently asked questions

How do you identify a male Eurasian Siskin?

Look for a black crown and small black chin patch on a streaked yellow-green body, with bright yellow wing bars and yellow patches at the base of the tail.

Why do Siskin numbers vary so much from year to year in gardens?

Siskins are nomadic and their movements depend heavily on conifer, alder, and birch seed crops; in years of poor seed production further north, more birds move south and visit feeders.

What do Siskins eat?

Mainly conifer seeds and alder or birch catkins extracted with their fine pointed bill, along with insects during the breeding season.

How can you tell a Siskin from a Greenfinch?

The Siskin is smaller and more heavily streaked with a black cap (in males) and finer bill, while the Greenfinch is larger, stockier, and less streaked.