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A photo of a Pine Siskin (Spinus pinus)
Pine Siskin

Pine Siskin

Spinus pinus

The Pine Siskin (Spinus pinus) is a small, lively finch with a penchant for the seeds of conifers. This North American native exhibits a streaked appearance, with brown upperparts and paler underparts, and a delicate, elongated bill that sets it apart from other finches. Both sexes share this plumage, though they may also sport yellow or white wing patches that add a touch of flair to their otherwise muted tones.

Identification Tips

When attempting to identify the Pine Siskin, look for its heavily streaked body, short forked tail, and slender, conical bill. The presence of yellow or white on the wings and tail can be variable but is a helpful distinguishing feature. Their size is comparable to the American Goldfinch, making them one of the smaller finches you might encounter.

Habitat

Pine Siskins are most commonly found in open conifer forests, which form the core of their breeding habitat. They are also adaptable, nesting in mixed woodlands, parks, and suburban areas with suitable trees. In winter, they may appear in a variety of habitats, from deciduous forests to grasslands and even urban gardens, wherever there are seeds to be found.

Distribution

These birds breed extensively across Canada and Alaska, and to a lesser extent in the western mountains and northern regions of the United States. Their winter range is highly erratic, with movements largely dictated by food availability, leading them to sometimes appear in large numbers far south of their breeding grounds.

Behaviour

Pine Siskins are social birds, often seen in flocks. Their movements are unpredictable, with some years seeing large southward migrations and others very few. They are known for their ability to withstand cold temperatures, with metabolic rates that can increase significantly to cope with extreme cold.

Song & Calls

The vocalizations of the Pine Siskin include a variety of twitters and buzzes. Their song is a pleasant mix of rapid trills and shorter notes, while their call is a distinctive "zhreee."

Breeding

Nests are constructed on horizontal tree branches, often in conifers, and are well-insulated to protect against the cold. Females are diligent in incubation, relying on their mates for food during this time.

Similar Species

The Pine Siskin can be confused with other streaked finches and sparrows, but its slender bill and yellow or white wing markings are key identifiers. It is also similar to the Eurasian Siskin, though the latter is generally brighter with less streaking and different plumage tones.

Diet and Feeding

These finches primarily consume seeds, such as those from thistle, alder, birch, and spruce. They are capable of storing seeds in their crop overnight, an adaptation for colder temperatures. Insects form a part of their diet in summer, especially when feeding young.

Conservation status

The Pine Siskin is currently listed as Least Concern, though populations have shown declines in some areas. Factors such as parasitism by brown-headed cowbirds and habitat fragmentation pose challenges to their productivity. Conservation efforts focus on maintaining large tracts of coniferous forests to support their populations.

Pine Siskin Sounds



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