Pine Siskins: Nomadic Winter Visitors to Your Feeder

Pine siskins (Spinus pinus) are small, streaky finches that appear unpredictably in winter, following seed crops across the continent. One year they swarm your feeders; the next they're absent. Understanding their habits helps you welcome them when they arrive.

Habitat and Range

Breeding across northern North America and the mountainous West, they favor open coniferous or mixed woodlands. Winter brings erratic "irruptions" every few years, when flocks of thousands sweep south and east into all lower 48 states, driven by food shortages. They also forage in weed fields, thickets, meadows, and backyards.

Identification

Unlike other finches, the pine siskin has a slender, sharply pointed bill. Its brown-streaked plumage shows yellow wing and tail edges, a short notched tail, and pointed wingtips obvious in flight. Like goldfinches, they fly in an undulating pattern.

Diet and Foraging

True to their name, they love conifer seeds (pine, spruce, cedar, hemlock) but also eat deciduous tree seeds (maple, alder, birch), buds (willow, elm), and weed seeds (dandelion, sunflower, ragweed). They'll take insects and spiders, and are drawn to road salt for minerals. Often seen hanging upside-down on cones, they forage in noisy, chattering flocks.

Breeding Behavior

Males display by circling with spread wings while singing. Females solicit feeding by crouching and fluttering wings. The female builds a shallow cup nest of grasses, twigs, and leaves, lined with fur, feathers, or thistledown, placed mid-height on a horizontal conifer branch. She lays 3–5 pale green-blue eggs speckled brown; the male feeds her during incubation. Pairs often nest near each other in loose colonies.

Attracting Pine Siskins

Offer small, shell-free seeds like nyjer (thistle) or hulled sunflower in feeders. They'll also glean fragments from larger seeds cracked by heavier-billed birds. A reliable winter food source may turn your yard into a regular stop on their nomadic route.