http://www.fotothing.com/bobbiel/ bobbiel's latest photos on Fotothing Sat, 30 Aug 2008 06:07:04 +0000 Sat, 30 Aug 2008 06:07:04 +0000 http://www.fotothing.com/ http://static.fotothing.com/images/smalllogo.gif http://www.fotothing.com/bobbiel/ http://www.fotothing.com/bobbiel/photo/93dbf0000ddcc5808bd40a2aa9ecb5a1/
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One of the heaviest of North American owls, the Snowy Owl stands nearly half a metre tall, with a wingspan of almost 1.5 m. As is the case with most diurnal birds of prey—those that are active during the day—the female is larger and heavier than the male. The average weight of the female is 2.3 kg compared to 1.8 kg for the male.

Adult males may be almost pure white in colour. Adult females are darker, their white feathers barred with dark brown. First-year birds of both sexes are more darkly marked than their adult counterparts. Immature males resemble adult females, and immature females are heavily barred and may appear dark grey when seen from a distance. The light coloration of Snowy Owls provides camouflage when the owls are perched on snow, but this advantage is lost in summer. As spring approaches and the ground becomes bare, owls move to sit on patches of snow or ice. No one knows whether they do this to camouflage themselves or whether they are merely keeping insects away or staying cool.

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Adult males may be almost pure white in colour. Adult females are darker, their white feathers barred with dark brown. First-year birds of both sexes are more darkly marked than their adult counterparts. Immature males resemble adult females, and immature females are heavily barred and may appear dark grey when seen from a distance. The light coloration of Snowy Owls provides camouflage when the owls are perched on snow, but this advantage is lost in summer. As spring approaches and the ground becomes bare, owls move to sit on patches of snow or ice. No one knows whether they do this to camouflage themselves or whether they are merely keeping insects away or staying cool.

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This large hawk often hovers above its prey like a kestrel. Lemmings, other rodents, and birds are its main sources of food during the breeding season. The number of eggs laid by the Rough-leg, like the Snowy Owl, depends on the food supply, with larger clutches occurring in years when lemmings are abundant. At a distance this hawk can be identified by its habit of hovering and by the way it perches: balancing precariously on the most slender twigs at the top of a tree. On the wintering grounds, where it takes larger rodents and upland birds, it can be strikingly tame, probably because it encounters few humans in the Far North.
Taken on the Canadian prairies.]]> Fri, 28 Dec 2007 01:52:12 +0000 nobody@fotothing.com (bobbiel) Taken on the Canadian prairies.]]> bobbiel http://www.fotothing.com/bobbiel/photo/d43fcf7a18d1f4097a26f6348895b50f/
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Bighorn sheep on a precarious mountain side.]]> Thu, 27 Dec 2007 03:45:26 +0000 nobody@fotothing.com (bobbiel) bobbiel http://www.fotothing.com/bobbiel/photo/4717f099210cf67dd2b8da24807ab2f1/
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