Good Morning Greg, 

Thank you for contacting the U of M Extension Service. 

From viewing your photos, I believe it is a mud dauber wasp nest (sceliphron caementarium). Please click on the following link about the insect: https://extension.entm.purdue.edu/publications/E-253/E-253.html

Here is another link: https://bugguide.net/index.php?q=search&keys=sceliphron+caementarium&search=Search 

It is a black wasp woth a long abdomial petiole, long legs and bright yellow markings. The female constructs multiple, free-form mud cylinders aboveground. The nest is attached to a building or structure near a pond or water source. The female collects damp soil for the nest. She provisions the nest with many spiders and a single egg is laid on the first spider. She collects more mud to seal the end of the cylinder. The female is a fast mason: she can construct one cylindrical cell with up to forty loads of mud in two hours or less. 

These details are from the book: Wasps, A Guide for Eastern North America, by Heather Holm, a Minnetonka resident. 

Interesting insect.  

Good Luck!

You are welcome!