Bolivia

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The blue lark (Lullula arborea) is a bird species from the lark family (Alaudidae). This small species of lark inhabits the southwestern Palearctic from England and Portugal to the northwest of Iran and Turkmenistan. It mainly inhabits sunny open spaces in or on the edge of forests. The species is a moderately common breeding bird in Central Europe and spends the winter in southwestern Europe as well as in the northern Mediterranean.

Features
The heath lark has a body length of 13.5 to 15 cm and is therefore significantly smaller than the better known field lark, the tail is remarkably short. The primary color of the top is dull light brown. The upper head and upper back are therefore finely light-beige and dark longitudinally striped, the burzel is single-color brown. The wings are dark gray brown. The large hand blankets are white at the base, broad black in the middle and yellowish white at the tip and form a clearly visible badge on the bow of the wing when the bird is seated. The tail is grey brown, the tips of the third to fifth control spring counted from the inside out have a small white tip spot, the outermost (sixth) control spring is whitened brown at the end.

The species shows a strong bright overeye stripe, the two overeye stripes combine at the back of the head in a v-shape. On the posterior side of the head, a fine dark grey line borders the overeye strip at the bottom, which then runs along the lower edge of the eye forward to the beak angle and also delimits the ear coverings at the front. The ear coverings are strong reddish brown and light forward. The beard is broad white, the chin is also dark gray, the throat is white. The upper chest is finely light-beige and dark longitudinally striped on a whitish background, the rest of the belly and the flanks are white.

The legs are yellowish brown to flesh-colored, the slender beak is brown rough and brightened at the base.

Voices
The melodic chant is mostly recited from a singing flight, less often and then shorter from the ground or from waiting. It is soft and melodic and consists of rows of short syllables that follow each other slowly at first, then faster and faster, and become louder and deeper at the end of the stanza. After each stanza follows a pause. The chanting can be rendered like “li, li-li-lililiLÍlülü ... ÍÍ-lü ÍÍ-lü ÍÍ-lü-ÍÍlu-ÍÍÍÍlu” etc. Passengers call softly fluent "TLUii-TLUii".

Distribution and habitat

The range of heatherk covers large parts of the southwestern Palearctic from England and Portugal to the northwest of Iran and Turkmenistan. The northern boundary of the distribution of this relatively heat-needing species runs through the south of England, the south of Scandinavia and Finland in Europe and further east through Karelia and central Russia. In the south, the distribution extends to North Africa, Cyprus, Israel, the north of Syria and the northwest of Iraq. She moved