Jeffers Foundation

PHENOLOGY

Phenology

Second Week of March

Keep your feeders filled and enjoy watching for new migrants, and get those wood duck nesting boxes cleaned out and ready. Maple syruping continues. Sap flow is triggered by thawing days that follow freezing nights. Maple sap is usually collected in the late afternoon; it's clear, mostly water and contains about 2.5 percent sugar. The sap is boiled down until the sugar content reaches 66 to 67 percent, at which point it's maple syrup. Between 30 and 40 gallons of sap are needed to produce one gallon of syrup. With about three hours more daylight than at the end of December, this is a good time for a winter camping trip to the BWCA.

March 12, 2016 - American woodcocks were back "peenting" and sky dancing. Some earlier than average ice-outs included Hall Lake near Fairmont, Loon Lake at Waseca, Lake Emily in St. Peter, and Lake Como at St. Paul.

March 13, 2016 - At Faribault, an early first mourning cloak butterfly was on the wing and a garter snake was out sunning.

March 17, 2016 - Very early official ice-out date for Lake Minnetonka (average ice-out is April 13).

LOOK FOR

What to Look For 03, 2018

First migrating American robin arrives (Carver County):
2016 March 6
2015 March 12
2014 March 19
2013 March 15
2012 March 2

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