Eurasian Sparrowhawk

Informazioni

The Eurasian Sparrowhawk is a small, agile bird of prey found across a wide range of habitats in Eurasia and North Africa. It is a classic 'true hawk' with short, broad, rounded wings and a long tail, perfectly adapted for hunting small birds in dense cover. Known for its stealthy hunting technique and sexual dimorphism, with females being significantly larger than males.

Dimensioni e longevità

Lunghezza

28-38 cm (male), 35-41 cm (female)

Apertura alare

55-65 cm (male), 67-80 cm (female)

Peso

110-196 g (male), 185-342 g (female)

Longevità

Typically 3-4 years in the wild, up to 10-15 years recorded

Dieta

Carnivore, primarily small to medium-sized birds, occasionally small mammals and insects

Caratteristiche fisiche

Piumaggio

Adult males have slate-grey upperparts, often with a bluish tinge, and finely barred rufous-orange underparts. Adult females have dark grey-brown upperparts and finely barred grey-brown underparts. Both sexes have a white supercilium (eyebrow stripe) and a dark eye stripe. Juveniles are browner above with coarser, often streaky, barring below.

Forma del becco

Short, strongly hooked, dark grey to black with a yellow cere.

Colore degli occhi

Adults have bright yellow to orange-yellow eyes; juveniles have pale yellow eyes.

Colore delle zampe

Long, slender yellow legs and feet with sharp black talons.

Caratteristiche distintive

Short, broad, rounded wings; long, square-tipped tail with 4-5 dark bands; rapid wing beats interspersed with glides; distinctive 'flap-flap-glide' flight pattern. Females are noticeably larger than males.

Aspetto giovanile

Juveniles are browner on the upperparts, often with rufous fringes to feathers. Underparts are more coarsely barred or streaked with dark brown on a creamy background. Eyes are paler yellow. The supercilium is less distinct.

Cambiamenti stagionali

No significant seasonal plumage changes. Plumage becomes slightly worn and faded by the end of the breeding season before molting.

Dimorfismo sessuale

Pronounced sexual dimorphism in size and plumage. Females are up to 25% larger and twice as heavy as males. Males have more rufous-orange barring on underparts and often a bluer back. Females are browner/greyer above and have grey-brown barring below.

Come identificare

1. 1

   Size and Shape

   Look for a small, agile raptor with short, broad, rounded wings and a long, square-tipped tail. Females are noticeably larger than males.

2. 2

   Flight Pattern

   Observe its characteristic 'flap-flap-glide' flight, often low and fast through vegetation. It rarely soars for extended periods.

3. 3

   Plumage (Adult Male)

   Slate-grey back (often bluish), finely barred rufous-orange underparts, white supercilium, yellow-orange eyes.

4. 4

   Plumage (Adult Female)

   Dark grey-brown back, finely barred grey-brown underparts, white supercilium, yellow eyes.

5. 5

   Plumage (Juvenile)

   Browner upperparts, coarser dark brown barring/streaking on creamy underparts, paler yellow eyes.

6. 6

   Head and Eye

   Distinctive white supercilium and bright yellow to orange eyes (paler in juveniles). Dark eye stripe.

7. 7

   Tail

   Long tail with 4-5 dark bands, often held slightly fanned in flight.

Habitat e areale

Biomi

Forests, woodlands, plantations, parks, gardens, suburban areas, agricultural land with scattered trees.

Areale geografico

Widespread across Europe, Asia, and North Africa. From Ireland and Portugal in the west, across Eurasia to Japan in the east. Also found in parts of North Africa.

Fascia altitudinale

Sea level up to 2,000 meters, occasionally higher in mountainous regions.

Ambienti preferiti

Prefers areas with a mosaic of dense woodland for nesting and open areas or woodland edges for hunting. Increasingly found in urban and suburban environments where prey (garden birds) is abundant.

Comportamento

Periodo di attività

Diurnal, most active during daylight hours, particularly in the morning and late afternoon.

Abitudini alimentari

A highly specialized bird hunter. It ambushes prey from a concealed perch or makes low, fast flights through vegetation. It uses its agility to navigate dense cover, often pursuing birds into bushes or around obstacles. Prey is typically caught in flight or snatched from the ground/foliage. Plucks feathers from prey before consumption.

Comportamento sociale

Generally solitary outside the breeding season. During breeding, pairs are monogamous. Not colonial. Juveniles may disperse widely after fledging.

Tipo di volo

Characterized by a distinctive 'flap-flap-glide' flight. When hunting, it flies low and fast, often weaving through trees. Soaring is less common but occurs during migration or display flights. Agile and maneuverable.

Migrazione

Northern populations are migratory, moving south to warmer climes in winter (e.g., from Scandinavia to southern Europe/North Africa). Central and southern European populations are largely resident or undertake short-distance dispersal. Migration is often broad-front, but can be concentrated at bottlenecks.

Territorialità

Highly territorial during the breeding season, defending a nesting territory from other sparrowhawks. Males perform aerial displays to attract mates and establish territory.

Riproduzione

Stagione riproduttiva

April to July, with peak egg-laying in late April to May.

Abitudini di nidificazione

Nests are typically built in trees (conifers or broadleaf), often close to the trunk or in a fork. The nest is a relatively small, flat platform of sticks, lined with bark flakes or fresh conifer needles. Often reuses old nests of other birds (e.g., crows, pigeons) or its own from previous years, adding new material.

Dimensione della covata

4-5 eggs

Descrizione dell'uovo

Typically 4-5 eggs (range 3-7), pale bluish-white, often sparsely marked with reddish-brown spots or blotches.

Periodo di incubazione

33-35 days, primarily by the female, while the male provides food.

Periodo di involo

24-30 days after hatching. Young remain dependent on parents for several weeks after fledging.

Cure parentali

Female incubates and broods the young; male provides all food for the female and young during incubation and early nestling period. Both parents hunt for the young as they grow older.

Dove trovarlo

Consigli sul campo

1. Look for 'bird alarm calls'. Small birds often give alarm calls when a sparrowhawk is present, indicating its presence even if unseen.
2. Scan woodland edges and clearings. They often perch concealed within trees, waiting to ambush prey. Look for them darting out from cover.
3. Watch bird feeders. Sparrowhawks are known to hunt around bird feeders, taking advantage of concentrated prey.
4. Observe flight patterns. Their low, fast, agile flight with rapid wing beats and glides is a key identification feature.
5. Listen for calls. During the breeding season, their 'kek-kek-kek' alarm call can reveal their presence.

Specie simili

Fatti rapidi

Primary Prey:

Small birds

Hunting Style:

Ambush predator, agile pursuit

Sexual Dimorphism:

Females significantly larger than males

Flight:

Flap-flap-glide, low and fast

Conservation Status:

Least Concern (IUCN Red List)

Curiosità

• The Eurasian Sparrowhawk is one of the most common birds of prey in Europe.
• Its agility allows it to hunt effectively in dense woodland, a skill few other raptors possess to the same degree.
• The species suffered significant declines in the mid-20th century due to organochlorine pesticides, but populations have largely recovered since these chemicals were banned.
• Female sparrowhawks are so much larger than males that they often hunt different sizes of prey, reducing competition between the sexes.
• They are known to 'stoop' (dive) at high speed, sometimes reaching over 100 km/h, when pursuing prey.

Classificazione scientifica

Regno

Animalia

Phylum

Chordata

Classe

Aves

Ordine

Accipitriformes

Famiglia

Accipitridae

Genere

Accipiter

Specie

Accipiter nisus

Esplora Eurasian Sparrowhawk