Jeffers Foundation

PHENOLOGY

Phenology

Fourth Week of September

It's grape harvest time in the vineyards. Farmers chop corn for silage and combine soybeans. White-tailed deer are wearing new graybrown winter coats. Autumn colors are coming on fast in the northern quarter of the state. Sumac shrubs and Virginia creeper vines display red foliage while eastern cottonwoods and green ash trees show golden-yellow leaves. Sugar maples are ablaze with red and burnt-orange, paper birches display golden-yellows, and mountain maple foliage is red, yellow, and orange. On Oberg Mountain near Tofte, photographers, landscape painters, and others mesmerized by nature's handiwork gather to experience the fleeting pleasure of spectacular autumn color in forests surrounding Lake Superior.

September 25, 2015: Hawk-watchers at Bethany Lutheran College in Mankato counted 1,993 broadwinged hawks, 106 sharp-shinned hawks, and 101 turkey vultures.

LOOK FOR

Last Baltimore oriole leaves to winter in Central America (from Minnetonka):
2015 September 9
2014 September 17
2013 September 14
2012 September 8
2011 September 3

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