The Eurasian pygmy owl (Glaucidium passerinum) is the smallest owl in Europe. It is a dark reddish to greyish-brown, with spotted sides and half of a white ring around the back of the neck. This species is found in the boreal forests of Northern and Central Europe to Siberia. This is a sedentary species, meaning that adults are resident throughout the year in its range. The exception may be during harsh winters, when the adults may move south. Young of the species usually move in autumn or winter. Taxonomy The Eurasian pygmy owl was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his Systema Naturae under the binomial name Strix passerina. The type locality is Sweden. The specific epithet is from Latin passerinus meaning "sparrow-like" implying "sparrow sized". This owl is now placed in the genus Glaucidium that was introduced in 1826 by the German zoologist Friedrich Boie. Two subspecies are recognised: G. p. passerinum (Linnaeus, 1758) – central, north Europe to southwest Siberia G. p. orientale Taczanowski, 1891 – central, east Siberia, Mongolia and northeast China Description The Eurasian pygmy owl is usually red-tinged to a greyish-brown with dots on its back. The tail is generally darker than the body with five narrow, whitish bars. It has a small, short head with white to grey eyebrows and yellow eyes. It lacks the ear tufts that many other owls have. There is a white half-collar on the back of the neck. The belly is mostly white with brown speckles. The beak is a greyish-yellow and hook-shaped. In order to be able to carry larger vertebrate prey, it has evolved disproportionately large feet. The legs and toes are a brownish-yellow with black talons. Females are long, and males are generally smaller, measuring in length. Females are about , and males are in weight. Vocalisation The call of the Eurasian pygmy owl is much higher in pitch than what is generally perceived as a normal owl "hoot". The call of the male is a monotonous chain of clear, fluted notes spaced by about two seconds. The call of the female is similar, but higher in pitch. Before and after the mating season, both males and females make a five to seven note rise on the pitch scale. Distribution and habitat This owl can be found primarily in coniferous forests of the taiga and higher mountainous