Un cureuil sur un tronc, Red Squirrel

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[Feb. 5th, 2012|09:51 pm]

Un cureuil sur un tronc, red squirrel

Sciurus vulgaris Il cherche sa nourriture d'abord la cime des arbres, surtout en dbut et en fin de journe: noix, noisettes, graines des arbres, bourgeons, corces, insectes, ufs et jeunes oiseaux encore au nid, mais il peut aussi descendre s'installer sur une souche d'arbre pour y ouvrir plus aisment les graines rcoltes. Parfois on le surprend mme explorer garages et greniers ! N'ayant pas de garde-manger dans son nid, l'cureuil amnage des caches sans logique apparente, soit au sol, souvent prs du pied des arbres, soit dans les arbres, par exemple la fourche de branches. On a rcemment montr chez d'autres cureuils aux tats-Unis et chez l'cureuil roux en Europe qu'il consomme aussi d'importantes quantits de champignons souterrains
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The red squirrel eats mostly the seeds of trees, neatly stripping conifer cones to get at the seeds within. Fungi, nuts (especially hazelnuts but also beech and chestnuts), berries, young shoots, and meat such as bird eggs are also eaten. Often the bark of trees is removed to allow access to sap. Between 60% and 80% of its active period may be spent foraging and feeding. Excess food is put into caches, either buried or in nooks or holes in trees, and eaten when food is scarce. Although the red squirrel remembers where it created caches at a better-than-chance level, its spatial memory is substantially less accurate and durable than that of grey squirrel; it therefore will often have to search for them when in need, and many caches are never found again. No territories are maintained, and the feeding areas of individuals overlap considerably.

CamraSony DSLR-A850
Exposition0,004 sec (1/250)
Ouverturef/4.5
Longueur focale200 mm
Vitesse ISO640
Dtection du degr d'exposition+0.7 EV

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