Eurasian nuthatch or wood nuthatch - a photo on Flickriver

            The adult male of the nominate subspecies, S. e. europaea is 14 cm (5.5 in) long with a 22.5–27 cm (8.9–10.6 in) wingspan. It weighs 17–28 g (0.6–1 oz). It has blue-grey upperparts, a black eye-stripe and whitish throat and underparts. The flanks and lower belly are orange-red, mottled with white on the undertail. The stout bill is dark grey with a paler area on the base of the lower mandible, the iris is dark brown and the legs and feet are pale brown or greyish. Most other members of the S. e. europaea group differ only in detail from the nominate form, often with respect to the hue of the underparts, but S. e. arctica is quite distinctive. It is large, pale, has a white forehead and a reduced eye-stripe, and it has more white in the tail and wings than any other subspecies. Nuthatches move on trees with short leaps, and do not use their tails for support. In flight, they have a characteristic appearance, with a pointed head, round wings and a short, square tail. Their flight is fast, with wings closed between beats, and is usually of short duration.

S. e. caesia, the most widespread of the western subspecies, has orange-buff underparts except for a white throat and cheeks. The other western forms mainly differ in the exact shade of the underparts, although some southeastern forms also show a white forehead and supercilium. S. e. sinensis and S. e. formosana, of China and Taiwan respectively, have buff underparts like the western races, but have buff, instead of white, throats.

The female is similar in appearance to the male, but may be identified by her slightly paler upperparts, a browner eyestripe and a more washed-out tone to the flanks and lower belly. In the eastern form, S. e. asiatica, some males have buff underparts like the female, and birds with this appearance are difficult to sex in the field. Young birds resemble the female, although their plumage is duller and they have paler legs. Individuals can be reliably sexed as female from about 12 days old by their paler and buffer flanks, or, in some white-breasted subspecies, by the creamier hue of their underparts.

Adults have a complete moult after breeding which takes about 80 days, starting from late May onwards and finishing by late September. The moult period for Siberian birds is more compressed, running from June to mid-September. Fledged juveniles moult some of their wing coverts when they are about eight weeks old.

In much of its range, Eurasian is the only nuthatch present. In southeast Europe and southwest Asia, the western and eastern rock nuthatches are larger and paler than the Eurasian species. They also lack white spots in the tail and are usually found in a different, stony habitat, and Krüper's nuthatch is small and has a black cap and reddish breast patch. In southwest China, the chestnut-vented nuthatch is very similar to the European bird, but is darker above, has less white on the face and has greyer underparts.

Taken on: September 18, 2022

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Eurasian

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Canon EOS R7

EF600mm f/4L IS USM « less

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Camera: Canon EOS R7, f/6.3, 1/500 sec, 840mm, ISO 1250 (more info) (hide info)

Camera:	Canon EOS R7
Lens:	EF600mm f/4L IS USM +1.4x III
Aperture:	f/6.3
Exposure Time:	0.002 sec (1/500)
Focal Length:	840mm
ISO:	1250
Exposure Bias:	-1 EV
Flash:	No Flash
Exposure Program:	Manual
Exposure Mode:	Manual
Metering Mode:	Spot
White Balance:	Auto
Color Space:	Uncalibrated
Software:	Adobe Photoshop CS6 (Windows)
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