Écureuil roux d'Amérique
Tamiasciurus hudsonicus
Mammifère
L'écureuil roux bruyant et territorial des forêts de conifères boréales et de montagne, pendant oriental de l'écureuil de Douglas de la côte pacifique. Dès la fin de l'été, il coupe les cônes verts avant qu'ils ne s'ouvrent et les entasse dans un dépôt : un monticule humide d'écailles rongées au pied d'un arbre, où les cônes restent fermés et la graine se conserve tout l'hiver. Un écureuil défend un dépôt, et le fait savoir sans relâche.
Plan pour cette espèce
Ensemble de plantes adaptées à Chicago, IL : d'abord les plantes hôtes et spécialistes, puis les plantes à nectar, fruits, graines, feuillage et abri qui restent compatibles avec la lecture climatique actuelle et du milieu du siècle.
0 relations essentielles / 5 plantes de soutien
Liens hôte/spécialiste : 0
Liens fourrage/pollinisation : 5
Liens abri : 0
Rôles de relation : 1
Pruche du Canada
De soutien / Plantes à graines
Cuts and middens hemlock cones along with the spruce and fir it grows among.
Pin blanc de l'Est
De soutien / Plantes à graines
Cuts green cones before they open and stockpiles them in a damp midden at the base of a tree, where the closed cones keep the seed through winter.
Épicéa commun
De soutien / Plantes à graines
Cuts the green cones and middens them at the foot of a tree; a spruce stand with a red squirrel in it usually has the pile of stripped scales to show for it.
Sapin de Fraser
De soutien / Plantes à graines
Cuts green fir cones in late summer and middens them at the base of a tree. In the southern Appalachian spruce-fir it is the main cone predator, and the middens are the obvious field sign.
Épicéa d'Orient
De soutien / Plantes à graines
Red squirrels cut green spruce cones before they open and cache them in middens, and a planted spruce in range is fair game whatever continent it came from - the pile of stripped scales at the base is the usual first evidence. Plausible rather than documented on this species; the cones are smaller than Norway spruce cones, which makes the tree a less rewarding larder than the neighbour it is often planted beside.
Plantes du catalogue
Plantes à graines · 9
The Wildflower Center records squirrels eating the seed, and the red squirrel is the main cone predator of the eastern boreal forest. It cuts green cones in late summer, before they shatter, and caches them in middens at the base of a tree - a heap of shredded scales and cores at the foot of a fir is the obvious field sign and is worth looking for when identifying the tree.
Cuts and middens hemlock cones along with the spruce and fir it grows among.
Cuts green cones before they open and stockpiles them in a damp midden at the base of a tree, where the closed cones keep the seed through winter.
Cuts green fir cones in late summer and middens them at the base of a tree. In the southern Appalachian spruce-fir it is the main cone predator, and the middens are the obvious field sign.
The interior counterpart, taking over from the Douglas squirrel east of the Cascade crest through the Rocky Mountain range of the interior form of grand fir, and caching green cones in the same way. Which squirrel you see in a grand fir stand is a reliable indicator of which side of the mountains you are standing on.
Cuts the green cones and middens them at the foot of a tree; a spruce stand with a red squirrel in it usually has the pile of stripped scales to show for it.
Red squirrels cut green spruce cones before they open and cache them in middens, and a planted spruce in range is fair game whatever continent it came from - the pile of stripped scales at the base is the usual first evidence. Plausible rather than documented on this species; the cones are smaller than Norway spruce cones, which makes the tree a less rewarding larder than the neighbour it is often planted beside.
The red squirrel is the most consequential seed predator on this species and it does not wait for the cones to open. It cuts green cones in late summer and stockpiles them in a midden - a damp mound of stripped scales at the base of a tree, where cones stay shut and the seed keeps through winter. It also clips twigs and terminal buds and eats both reproductive and vegetative buds. Field studies record mice and voles preferring red and white spruce seed over balsam fir seed, so a mast crop is under pressure from the ground as well as the canopy.
The cone-cutter of the Rocky Mountain half of this range. It cuts green cones before they can disintegrate and stockpiles them in damp middens, where the still-closed cones keep their seed - a strategy that works specifically because a fir cone falls apart if it is left on the tree to ripen. The heaped piles of stripped scales at the base of a subalpine fir are its most obvious field sign.
Répartition
Forêts de conifères et forêts mixtes boréales et de montagne, de l'Alaska et du Canada vers le sud à travers les montagnes Rocheuses, les Grands Lacs et la Nouvelle-Angleterre, et le long des Appalaches jusqu'aux forêts méridionales d'épinettes et de sapins. Il remplace l'écureuil de Douglas à l'est des chaînes du Pacifique.
Sources et citations
Citer cette page
Utilisez cette citation pour la fiche faune Plotwright. Utilisez les fiches de sources ci-dessous pour explorer les références ayant alimenté sa taxonomie, sa répartition, sa conservation, ses plantes hôtes, son alimentation et son habitat.
Plotwright. (n.d.). Écureuil roux d'Amérique (Tamiasciurus hudsonicus). Retrieved 2026, August 20, from https://plotwright.com/wildlife/american-red-squirrel
Sources utilisées pour cette fiche
Cette fiche est élaborée à partir des sources ci-dessous.
Animal Diversity Web: Tamiasciurus hudsonicus
Species account for cone cutting, midden caching, territorial defence, and the boreal-to-montane distribution.
GBIF: Tamiasciurus hudsonicus
GBIF backbone key 2437282 is an exact accepted match for Tamiasciurus hudsonicus in family Sciuridae.
iNaturalist: Tamiasciurus hudsonicus
iNaturalist taxon 46260 is the active species record with community observation range data.
Wikipedia: American red squirrel
Corroborating reference for midden behaviour and for the split from the Douglas squirrel.