NATURE NOTES
NATURE NOTES OF S.E. MINNESOTA
Monday, March 23, 2015
Platte River between Kearney, Nebraska and Grand Island, Nebraska. The Platte is a shallow sandbar-laden river that provides overnight safety to over 1/2 million migrating Sandhill Cranes. The cranes winter in Mexico and the southern U.S. and then use the Platte as a resting and refueling stop on their way north to the Dakotas and Canada. We spent three (mostly cloudy) days along the Platte to experience the majesty of the great Sandhill migration. The Sandhills are along the Platte from late February to mid-April.
Sandhill Cranes on a side channel of the Platte River near Grand Island, Neb. Most of the cranes leave the safety of the sandbars during the day. At night they come back to the Platte River shallows and sandbars by the hundreds of thousands. This provides relative safety from predators for the cranes.
Sandhill Cranes with a Canada Goose for size comparison. The Greater Sandhill Crane stands about 4 feet tall, while the Lesser Sandhill Crane is somewhat smaller. Both the Lesser and Greater are found in the Platte River area of Nebraska. The vast majority of the Sandhill Cranes in Minnesota and Wisconsin are of the Greater variety. They have a 6-7 foot wingspan and their long neck enables them to make a loud chatter-like call that can be heard for over a mile.
The Sandhill Cranes spend the daylight hours foraging for food in the cornfields, soybeans fields, and pastures of the farmland that adjoins the Platte River. They may fly out several miles to find fields that still provide a food supply that will fatten them up for the next leg of their journey north. The cranes nest on the prairies of the Dakotas, Minnesota, Wisconsin, and Canada. Their nesting range is expanding and they even now nest in S.E. Minnesota.
More Sandhill Cranes kept coming to the river as the sun finally dropped below the horizon. The loud chatter of the cranes showed no let up as darkness set in. The sights and sounds of thousands of cranes congregating on the Platte River is truly awesome. Go to the facebook page for Gary Erickson to view videos of the Sandhill Cranes.
Sunday, March 15, 2015
SPRING MIGRATION IS JUST BEGINNING
Bald Eagle, Mississippi backwaters, March 12, 2015. The migration of birds up from the south has begun. We took a drive to the Mississippi River and saw 32 Bald Eagles, 5 Sandhill Cranes, one flock of about 100 Red-winged Blackbirds, 1 Killdeer, several Robins, Common and Hooded Mergansers, and of course Canada Geese. Most of the big river is still iced in and spring is not here yet, but it is coming.
Saturday, March 7, 2015
THE "ICE CAVES" OF LAKE SUPERIOR
We began the long hike over the ice on the south shore of Lake Superior to see the famous ice caves located on the peninsula way in the distance. The ice caves are part of the Apostle Islands National Seashore located near Bayfield in far northern Wisconsin. We joined thousands of others on a cold trek of four miles round trip. Reports were that the warm temperatures and high winds could soon bring an end to the ice caves for 2015. Below are some of the photos from this trip.
As we got closer to the cliffs, it became apparent that the long cold hike across the ice was going to be well worth the effort. A few years ago we hiked the summer trails on the cliffs above. The lake below was turbulent with wave action. The base of the cliff is unapproachable except in the winter when the lake is frozen. On average the south shore of Lake Superior only freezes solid enough one out of every five years to give access to the cliffs and ice caves.