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Torenvalk


Torenvalk
Photo Information
Copyright: Thijs van Balen jr (Pentaxfriend) Gold Star Critiquer/Silver Workshop Editor/Gold Note Writer [C: 514 W: 24 N: 1888] (8048)
Genre: Animals
Medium: Color
Date Taken: 2008-01-02
Categories: Birds
Camera: Pentax K10D, Pentax fa*4,5 300mm if ed, Digital ISO 200, 67mm B+W Skylight KR1,5
Exposure: f/6.3, 1/1250 seconds
Photo Version: Original Version
Date Submitted: 2008-03-09 18:11
Viewed: 3155
Points: 14
[Note Guidelines] Photographer's Note
Rijk: Animalia (Dieren)
Stam: Chordata (Chordadieren)
Klasse: Aves (Vogels)
Orde: Falconiformes (Roofvogels)
Familie: Falconidae (Caracara's en valken)
Geslacht: Falco
Soort: Falco tinnunculus

De torenvalk (Falco tinnunculus) is een vogel uit de familie van valken (Falconidae).

Een volwassen exemplaar is 30 tot 35 centimeter groot. Ze komen voor op allerlei soorten plaatsen, ook in steden. De dieren zijn vaak te zien langs autowegen. Ze hangen stil in de lucht met snelbewegende vleugels ("bidden") en kijken daarbij vanuit de lucht naar beneden op zoek naar een prooi. Als ze deze hebben gevonden, duiken ze erop af. Het voedsel bestaat voornamelijk uit kleine zoogdieren en insecten, bijvoorbeeld muizen en kevers. Hierom bouwen ze hun nest dan ook op een plaats waar ze zicht hebben op een open ruimte waar ze kunnen speuren naar voedsel.

Het mannetje heeft een grijsblauwe kop en nek, een roodbruine rug en vleugels met donkere vlekken. De staart is blauwachtig grijs en heeft een zwarte eindband. Het vrouwtje is identiek aan het mannetje, maar heeft een bruine kop en nek, dwarsbandjes op de rug en vleugels en een bruine staart.

Het gehele jaar komen torenvalken in een groot deel van Europa voor, waaronder Nederland en BelgiŽ. In ScandinaviŽ en Noord-Rusland zijn de dieren alleen in de zomer aan te treffen.


The Common Kestrel (Falco tinnunculus) is a bird of prey species belonging to the kestrel group of the falcon family Falconidae. It is also known as the European Kestrel, Eurasian Kestrel, or Old World Kestrel. In Britain, where no other brown falcon occurs, it is generally just called "the Kestrel".

This species occurs over a large range. It is widespread in Europe, Asia, and Africa, as well as occasionally reaching the east coast of North America. The Common Kestrel is small compared with other birds of prey, but larger than most songbirds. Kestrels have long wings as well as a distinctive long tail like the other Falco species. This bird's plumage is mainly brown with dark spots. Unlike most hawks they display sexual colour dimorphism with the male having a blue-grey head and tail. The tail is brown with black bars in females, and has a black tip with a narrow white rim in both sexes. All Common Kestrels sexes have a prominent black malar stripe like their closest relatives.

Common Kestrels measure 34 - 38 cm (~13 - 15 in) from head to tail, with a wingspan of 70 - 80 cm (~27 - 31 in). The average adult male weighs around 155 g (~5Ĺ oz) with the adult female weighing around 184 g (~6Ĺ oz).

Behaviour
This is a diurnal animal and prefers an "open country" habitat such as fields, heaths, and marshland. When hunting, the Common Kestrel hovers about 10 - 20 m (33 - 66 ft) above the ground, searching for prey, usually by flying into the wind or using thermals from ridges. Once prey is sighted, the bird makes a short, steep dive toward the target. It can often be found hunting along the sides of roads and motorways. It has recently been shown that it is able to see near ultraviolet light[citation needed]. This allows them to detect the urine trails around rodent burrows, which reflect ultraviolet light.

Prey
Kestrels prey upon small mammals, including voles, as well as small birds, large insects, earthworms, and frogs. Like most birds of prey, Kestrels have keen eyesight enabling them to spot small prey from a distance. Kestrels require the equivalent of 4-8 voles a day, depending on energy expenditure (time of the year, amount of hovering, etc). They have been known to catch several voles in succession and to store some for later consumption.

In built-up areas Kestrels will often nest on buildings or reuse the old nests of crows

"Sound and more dutch notes ."

smitha, aido, ellis49, dB_grafix, Tamrock, oanaotilia, Argus has marked this note useful
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Critiques [Translate]

  • Great 
  • aido Gold Star Critiquer/Gold Star Workshop Editor [C: 1044 W: 156 N: 1218] (4046)
  • [2008-03-09 21:19]

Hello Thijs,
Good capture, I know how fast these birds are, evident from the blur in the wingtips at 1/1250, not easy to capture. Good detail, great colour and light. Good POV to get the light right, nice work.
Regards,
Adrian

Hello Thijs,
you have managed great with this in-flight shot, this bird is
really fast och yo nailed him with good sharpness and fine details.
The exposure are good and so are the composition and POV.
Well done.

Hello Thijs ,
The lighting is very good for high in the sky. I like the wingspan and how you stopped them so well. Good focus on eye.
A difficult shot done very good.
TFS
Doug

hi thijs!
nice capture on this fast bird!
good work!

Hello Thijs,
Wonderful in flight shot!.
Great POV, DOF, focus and details.
Nice blue sky in the background.
TFS & Regards,
Smitha.

  • Great 
  • Zeno Gold Star Critiquer/Gold Note Writer [C: 483 W: 0 N: 1345] (10867)
  • [2008-03-10 8:42]

Ha Thijs,

Mooie plaat van deze torenvalk. "Biddend" vind ik ze het mooist. De blauwe achtergrond completeert het geheel.

groet,
Zeno.

  • Great 
  • Argus Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 5038 W: 260 N: 15594] (50626)
  • [2008-03-14 7:11]

Hello Thijs,
Very good in-flight capture of a female Kestrel. This is pretty sharp, caught in a fine wing position and composed nicely agaist a blue sky with excellent lighting.
Thanks for sharing this fine image,
Ivan

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