Common Kestrel

About

The Common Kestrel is a small, elegant falcon, widely distributed across Europe, Asia, and Africa. Known for its distinctive hovering flight while hunting, it is one of the most familiar birds of prey in many parts of its range. It exhibits sexual dimorphism, with males having a grey head and tail, contrasting with the rufous-brown back, while females and juveniles are uniformly rufous-brown. They are agile predators, primarily feeding on small mammals and insects.

Size & lifespan

Length

32-39 cm (13-15 in)

Wingspan

65-82 cm (26-32 in)

Weight

Males: 136-252 g (4.8-8.9 oz), Females: 154-314 g (5.4-11.1 oz)

Lifespan

Typically 3-5 years in the wild, up to 16 years in captivity.

Diet

Primarily small mammals (voles, mice), large insects (grasshoppers, beetles), small birds, and lizards. Diet varies seasonally and geographically.

Physical characteristics

Plumage

Adult male: Rufous-brown back with dark spots, grey head, grey rump and tail with a broad black subterminal band and white tip. Underparts are pale buff, streaked with brown. Adult female: Uniformly rufous-brown above with heavier dark barring and spotting, rufous-brown head, and rufous-brown tail with multiple dark bars and a broader subterminal band. Underparts are streaked brown on a buff background. Juvenile: Resembles adult female, but typically more heavily streaked below and often looks scruffier.

Beak shape

Short, hooked, and sharp, typical of falcons, optimized for tearing prey.

Eye color

Dark brown

Leg color

Yellow

Distinguishing features

Long, pointed wings in flight. Distinctive hovering flight with rapid wing beats while holding the head still, scanning the ground. Males have a clear grey head and tail, females and juveniles are browner overall. Black 'tear' stripe below the eye is often visible.

Juvenile appearance

Similar to adult females, but often with heavier streaking on the underparts and a less refined plumage overall. The tail barring is usually more irregular or finely barred than in adult females.

Seasonal changes

No significant seasonal plumage changes. Plumage wear can make colors appear duller or lighter towards the end of a breeding season.

Sexual dimorphism

Pronounced. Males have a grey head, rump, and tail with a single black subterminal band, and a less heavily spotted rufous back. Females are larger, with an all rufous-brown head, barred rufous-brown tail, and more heavily barred and spotted rufous-brown back.

How to identify

1. 1

   Hovering Flight

   Look for a bird maintaining a fixed position in the air, facing the wind, with rapid wing beats. This is a primary hunting technique for Common Kestrels.

2. 2

   Plumage (Male)

   Identify by the distinctive blue-grey head, blue-grey tail with a single broad black subterminal band, and rufous-brown back with black spots.

3. 3

   Plumage (Female/Juvenile)

   Observe the overall rufous-brown coloration with dark barring on the back and tail (multiple bars on tail), and heavy streaking on the underparts.

4. 4

   Silhouette

   In flight, look for long, pointed falcon wings and a relatively long tail. When perched, they appear compact with an upright posture.

5. 5

   Calls

   Listen for their characteristic high-pitched, rapid 'kee-kee-kee-kee' or 'kik-kik-kik-kik' calls.

Habitat & range

Biomes

Temperate forests, grasslands, shrublands, deserts, agricultural land, urban areas.

Geographic range

Palearctic, Afrotropical, and Indomalayan realms. Widely distributed across Europe, Asia (excluding the Arctic and heavily forested regions), and Africa.

Elevation range

Sea level up to 4500 meters or more in mountainous regions.

Preferred environments

Open countryside with scattered trees or prominent perches, cliffs, buildings, and often found in mosaics of farmland, heathland, and suburban areas where suitable hunting and nesting sites are available.

Behavior

Activity time

Diurnal, active during daylight hours.

Feeding habits

Hunts primarily by hovering or 'kiting' into the wind, scanning the ground below for prey. Once prey is sighted, it descends rapidly, sometimes in a shallow dive, to snatch it. Also hunts from a perch. Small prey is often consumed whole, larger prey is dismembered. Pellets containing indigestible material are regurgitated.

Social behavior

Generally solitary outside the breeding season. Pairs form for breeding. Not typically colonial, but sometimes nests in loose aggregations if suitable sites are abundant.

Flight pattern

Characterized by its unique hovering flight, often described as 'kiting,' where it maintains a fixed position against the wind with rapid wing beats. Also has a buoyant, agile flight with quick bursts of wing beats and glides. Soars on thermals.

Migration pattern

Varies from resident to migratory depending on geographic location. Northern and eastern European/Asian populations are largely migratory, moving to southern Europe, Africa, and southern Asia for winter. Western and southern European populations are often resident or undertake short-distance dispersive movements.

Territoriality

Territorial during the breeding season, defending nesting and immediate hunting areas around the nest site. Outside breeding, shows less territorial aggression.

Breeding & reproduction

Breeding season

Typically April to July in temperate regions, varying geographically to align with prey availability.

Nesting habits

Does not build its own nest. Primarily uses old raven, crow, or magpie nests in trees. Also readily nests in tree cavities, cliff crevices, ledges of buildings, and artificial nest boxes. Both sexes participate in nest site selection, but the female does most incubation.

Clutch size

Usually 3-6 eggs.

Egg description

3-6 (sometimes 2-8) eggs, typically dull white or creamy-buff, heavily mottled or blotched with reddish-brown.

Incubation period

27-29 days, primarily by the female, with the male providing food.

Fledging period

27-32 days after hatching. Young begin to fly, but remain dependent on parents for several weeks.

Parental care

Both parents care for the young. The male provides most of the food during incubation and early chick-rearing. The female broods and feeds the young with prey brought by the male. Both parents feed the fledglings until they become independent.

Where to find

Field tips

1. Scan Overhead. When in suitable habitat, frequently scan the skies, especially into the wind, for their characteristic hovering flight.
2. Check Perches. Look for them perched conspicuously on exposed branches of trees, utility poles, or high points, often overlooking open ground.
3. Listen for Calls. Their calls, especially when agitated or in breeding season, can draw attention to their presence.
4. Look for Pellets. Around known perches or nesting sites, look for regurgitated pellets containing fur and bones, indicating their presence.
5. Nest Boxes. In areas with conservation efforts, check artificial nest boxes that may have been installed for kestrels.

Similar species

Quick facts

Primary Hunting Method:

Hovering (kiting)

Sexual Dimorphism:

Present (males with grey head/tail)

Nesting Type:

Uses old nests or natural cavities

Diet Staple:

Small mammals (voles)

Conservation Status:

Least Concern

Fun facts

• Common Kestrels can see ultraviolet light, which helps them locate voles by spotting their urine trails, which reflect UV light.
• During their characteristic hovering flight, their heads remain remarkably still, allowing them to precisely track prey movements below.
• Despite being called 'Common Kestrel,' they are not always the most common kestrel species in all parts of their range.
• They are one of the few raptors that have successfully adapted to urban environments, often nesting on tall buildings.

Scientific classification

Kingdom

Animalia

Phylum

Chordata

Class

Aves

Order

Falconiformes

Family

Falconidae

Genus

Falco

Species

Falco tinnunculus

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