Piikkisäkeitä

Piikkisäkeitä, also known as Saw-whet sparrow, is a species of small perching bird in the family Troglodytidae. The species is native to North America, and its range includes the United States and southeastern Canada.

Physical characteristics of the Piikkisäkeitä include a length of approximately 13-15 centimeters, with a mass of around 11-18 grams. The plumage is brownish with a streaked belly and white markings on the throat. Both males and females exhibit similar appearance, with no distinct sex-related differences.

Habitat and behavior of the Piikkisäkeitä involve open woodlands and dense shrubs along coasts. They are primarily ground-nesting birds, with both parents contributing to incubation and feeding young. Males engage in territorial displays, using a distinctive song and lists of whistling phrases to maintain pair bonds. In addition, both sexes contribute to construction of their nesting tunnel burrows.

Feeding behavior of the Piikkisäkeitä consists of primarily invertebrates, such as insects, arachnids, and smaller crustaceans. In the winter, supplementary food is obtained through berries and seeds. Foraging behavior is mostly grounded, with exploration of various substrate layers up to a depth of about 4 centimeters.

Piikkisäkeitä is a monogamous species with long-term pair bonds. The species has not been considered threatened or endangered, but is protected under various national laws for conservation efforts.