Lesser Whitethroat

Informazioni

The Lesser Whitethroat (Curruca curruca), known in Italian as Sterpazzolina, is a small, rather plain passerine bird belonging to the Old World warbler family. It is a migratory species, known for its distinctive rattling song and preference for scrubby habitats. Despite its somewhat drab appearance, it is a widespread and common bird across much of Europe and Asia.

Dimensioni e longevità

Lunghezza

12.5-14 cm

Apertura alare

18-21 cm

Peso

10-16 g

Longevità

Typically 2-5 years in the wild, with a maximum recorded age of over 8 years.

Dieta

Insectivore, primarily feeding on insects and their larvae, spiders, and other small invertebrates. In late summer and autumn, it supplements its diet with berries and fruits.

Caratteristiche fisiche

Piumaggio

Overall grey-brown upperparts, with a slightly darker grey head and nape. The underparts are whitish, often with a buffy wash on the flanks. The wings are dark brown with paler edges to the flight feathers, and the tail is dark brown with white outer tail feathers, particularly noticeable in flight.

Forma del becco

Small, slender, pointed bill, dark grey to blackish.

Colore degli occhi

Dark brown, often appearing black, set in a slightly darker grey facial mask.

Colore delle zampe

Dark grey to blackish.

Caratteristiche distintive

The most distinctive feature is the dark grey cap and ear-coverts contrasting with the paler throat and underparts. The white outer tail feathers are also a key identification mark, especially when the bird takes flight. It lacks the rufous wing panel of the Common Whitethroat.

Aspetto giovanile

Juveniles resemble adults but are generally duller and browner overall, with less distinct grey on the head. The plumage is looser and softer, and the eye-ring may be slightly more prominent.

Cambiamenti stagionali

No significant seasonal plumage changes. The plumage remains consistent throughout the year, though fresh autumn plumage may appear slightly richer before wear and tear.

Dimorfismo sessuale

Minimal to none. Males and females are virtually identical in plumage. Males may appear slightly more intensely colored, but this is not a reliable field mark.

Come identificare

1. 1

   Head Pattern

   Look for the distinctive dark grey cap and ear-coverts that contrast with the paler throat and whitish underparts. This is a key field mark distinguishing it from other whitethroats.

2. 2

   Plumage Coloration

   Note the overall plain grey-brown upperparts and whitish underparts. Absence of rufous tones on the wings (present in Common Whitethroat) is important.

3. 3

   Tail Pattern

   Observe the white outer tail feathers, especially when the bird takes flight or fans its tail. This is a reliable identification feature.

4. 4

   Song

   Listen for the characteristic short, dry, rattling trill ('tche-tche-tche-tche'). This unique song is often the first indication of its presence, even when the bird is hidden.

5. 5

   Behavior

   Watch for its skulking behavior, often staying hidden within dense vegetation, though it will occasionally pop out to sing or forage.

Habitat e areale

Biomi

Temperate forests, scrublands, hedgerows, woodland edges, parks, gardens, and agricultural landscapes.

Areale geografico

Breeds across most of Europe (excluding northern Scandinavia and parts of the Iberian Peninsula) and temperate Asia, extending east to Siberia and Mongolia. Winters in sub-Saharan Africa and parts of the Arabian Peninsula.

Fascia altitudinale

Typically found from sea level up to 1,500 meters, occasionally higher in some parts of its range.

Ambienti preferiti

Prefers dense, thorny scrub, hedgerows, young plantations, and areas with scattered bushes and small trees. It often favors transitional zones between open country and woodland, providing both cover for nesting and foraging opportunities.

Comportamento

Periodo di attività

Diurnal, active during daylight hours.

Abitudini alimentari

Forages actively among foliage, gleaning insects and larvae from leaves and twigs. It can be quite acrobatic, hanging upside down to reach prey. During late summer and autumn, it consumes a significant amount of berries, which are crucial for fueling its long migration.

Comportamento sociale

Generally solitary or found in pairs during the breeding season. Outside of breeding, they are mostly solitary, though they may gather in loose groups at abundant food sources or during migration.

Tipo di volo

Flight is typically short, undulating, and rather weak, often low over vegetation. When migrating, it undertakes long-distance, sustained flights.

Migrazione

A long-distance migratory species. European populations migrate south to winter in sub-Saharan Africa, while Asian populations winter in the Arabian Peninsula and parts of East Africa. Migration occurs primarily at night.

Territorialità

Males establish and defend breeding territories through song and displays. Both sexes participate in defending the nest site.

Riproduzione

Stagione riproduttiva

Typically May to July in Europe, with variations depending on latitude and climate. Usually one, sometimes two broods per season.

Abitudini di nidificazione

The nest is a small, neat cup-shaped structure, usually built low down in dense thorny bushes, brambles, or thickets. It is constructed from grass stems, leaves, rootlets, and spider silk, often lined with finer materials like hair or feathers. Both sexes participate in nest building.

Dimensione della covata

3-7 eggs

Descrizione dell'uovo

3-7 eggs (typically 4-6), smooth, glossy, white or pale greenish-white, heavily speckled and blotched with olive-brown, grey, and sometimes purplish markings, often concentrated at the broad end.

Periodo di incubazione

11-12 days, primarily by the female, though the male may assist.

Periodo di involo

10-12 days after hatching. Young leave the nest before they are fully capable of sustained flight.

Cure parentali

Both parents feed and care for the nestlings and fledglings. The male often continues to feed the first brood while the female starts a second clutch.

Dove trovarlo

Consigli sul campo

1. Listen for the song. The distinctive rattling song is often the easiest way to locate a Lesser Whitethroat, as they are often hidden. Once you hear it, try to pinpoint the source.
2. Be patient and observe. They can be quite shy and skulking. Find a suitable patch of scrub and wait quietly. They may eventually emerge to forage or sing from a more exposed perch.
3. Look for movement in dense cover. Scan dense bushes and hedgerows for subtle movements, as they often forage deep within the foliage.
4. Check for white outer tail feathers. If a small, plain warbler flies away from you, look for the flash of white on the outer tail feathers, which is a strong indicator of a Lesser Whitethroat.
5. Visit during migration. During spring and autumn migration, they can be found in a wider variety of habitats, including coastal scrub and urban parks, as they refuel.

Specie simili

Fatti rapidi

Common Name:

Lesser Whitethroat (Sterpazzolina)

Scientific Name:

Curruca curruca

Family:

Sylviidae

Diet:

Insectivore (also berries in autumn)

Habitat:

Scrub, hedgerows, woodland edges

Migration:

Long-distance migrant to Africa/Arabian Peninsula

Conservation Status:

Least Concern

Key ID Feature:

Grey cap, white outer tail feathers, rattling song

Curiosità

• The scientific name 'Curruca' is derived from Latin and refers to a type of small bird, possibly a warbler.
• Despite its rather plain appearance, the Lesser Whitethroat undertakes one of the longest migrations of any European warbler, traveling thousands of kilometers to its wintering grounds.
• There are several recognized subspecies of Lesser Whitethroat, some of which have distinct migratory routes and wintering areas, such as 'blythi' (Siberian Lesser Whitethroat) and 'minula' (Desert Lesser Whitethroat).
• The species was formerly placed in the genus 'Sylvia' but was moved to 'Curruca' based on phylogenetic studies.
• Its diet shifts significantly from almost exclusively insects in summer to a high proportion of berries in late summer and autumn, crucial for building up fat reserves for migration.

Classificazione scientifica

Regno

Animalia

Phylum

Chordata

Classe

Aves

Ordine

Passeriformes

Famiglia

Sylviidae

Genere

Curruca

Specie

Curruca curruca

Esplora Lesser Whitethroat