File:Stuutje1979 Western Jackdaw 1.JPG
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[edit]DescriptionStuutje1979 Western Jackdaw 1.JPG |
English: The Western Jackdaw (Corvus monedula), sometimes known as the Eurasian Jackdaw, European Jackdaw or simply Jackdaw, is a passerine bird in the crow family. Found across Europe, western Asia and North Africa, it is mostly resident, although northern and eastern populations migrate south in winter. Four subspecies are recognised, which mainly differ in the colouration of the plumage on the head and nape. Linnaeus first described it formally, giving it the name Corvus monedula. Later analysis of its DNA shows that, with its closest relative the Daurian Jackdaw, it is an early offshoot from the genus Corvus, and possibly distinct enough to warrant reclassification in a separate genus, Coloeus. The common name derives from the word "jack", meaning "small", and "daw", the native English name for the bird.
Measuring 34–39 centimetres (13–15 in) in length, the Western Jackdaw is a black-plumaged bird with a grey nape and distinctive pale-grey irises. It is gregarious and vocal, living in small groups with a complex social structure in farmland, open woodland, on coastal cliffs, and in urban settings. An omnivorous and opportunistic feeder, it eats a wide variety of plant material and invertebrates, as well as food waste from urban areas. Western Jackdaws are monogamous and build simple nests of sticks in cavities in trees, cliffs, or buildings. About five pale blue or blue-green eggs with brown speckles are laid and incubated by the female. The young then fledge in four to five weeks. |
Date | |
Source | Own work |
Author | Stuutje1979 |
Camera location | 51° 55′ 38.41″ N, 4° 26′ 27.78″ E ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:25, 1 July 2012 | 4,608 × 3,072 (4.85 MB) | Stuutje1979 (talk | contribs) |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D3100 |
Exposure time | 1/200 sec (0.005) |
F-number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 14:00, 29 June 2012 |
Lens focal length | 300 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Ver.1.01 |
File change date and time | 14:00, 29 June 2012 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 14:00, 29 June 2012 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 5 APEX (f/5.66) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
DateTime subseconds | 80 |
DateTimeOriginal subseconds | 80 |
DateTimeDigitized subseconds | 80 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 450 mm |
Scene capture type | Standard |
Scene control | Low gain up |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS tag version | 2.2.0.0 |